SB2026101310 - Ubuntu update for linux-azure

Description

This security bulletin contains information about 236 vulnerabilities.

1) Improper control of a resource through its lifetime (CVE-ID: CVE-2026-92502)

CWE-ID: CWE-664 - Improper control of a resource through its lifetime

CVSSv4: 5.6 [CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a local privileged user to cause data loss.

The vulnerability exists due to improper clearing of stale xarray tags in ext4 writeback handling when clean folios are skipped during writeback. A local privileged user can trigger writeback during a system reboot to cause data loss.

The issue occurs in ext4 data=journal mode while the superblock is being remounted read-only during reboot.

2) Improper input validation (CVE-ID: CVE-2026-72065)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 5.1 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows an attacker with physical access to cause a denial of service.

The vulnerability exists due to improper input validation in the mana RX completion queue handling in mana_process_rx_cqe() when processing packet length values reported by the NIC. An attacker with physical access can supply an invalid packet length via a malicious or compromised NIC device to cause a denial of service.

The reported packet length is supplied by the NIC device and is not sufficiently validated before skb processing.

3) Improper locking (CVE-ID: CVE-2026-72064)

CWE-ID: CWE-667 - Improper Locking

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper synchronization for cpu access in the mana RX buffer handling in the Linux kernel MANA network driver when processing received packets from page pool fragments. A local user can trigger packet reception on an affected interface to cause a denial of service.

The issue occurs when page pool fragments are used with frag_count greater than 1 on configurations that require explicit DMA syncing, such as systems booted with swiotlb=force.

4) Improper locking (CVE-ID: CVE-2026-64528)

CWE-ID: CWE-667 - Improper Locking

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper lock handling in s3c24xx_serial_rx_enable() and s3c24xx_serial_rx_disable() when console flow control is engaged during transmit state changes. A local user can trigger the affected serial driver code path to cause a denial of service.

The issue occurs because the code attempts to reacquire the same non-recursive spinlock while it is already held on the same CPU.

5) Out-of-bounds read (CVE-ID: CVE-2026-64527)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to an out-of-bounds read in hyperv_receive() and hyperv_receive_sub() in the Hyper-V DRM protocol handler when handling oversized or malformed VMBus packets. A remote attacker can send a specially crafted VMBus packet to cause a denial of service.

An error path may report a required packet length larger than the 16 KiB receive buffer, leading the code to use that length unsafely if forwarded for copying.

6) Out-of-bounds read (CVE-ID: CVE-2026-64527)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to disclose sensitive information.

The vulnerability exists due to an out-of-bounds read in hyperv_receive_sub() in the Hyper-V DRM protocol handler when processing crafted VMBus packets. A remote attacker can send a specially crafted VMBus packet to disclose sensitive information.

The issue affects completion-driving message handling and can cause residual data from a prior message to be treated as a valid response payload.

7) Improper resource shutdown or release (CVE-ID: CVE-2026-64525)

CWE-ID: CWE-404 - Improper Resource Shutdown or Release

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper resource shutdown or release in xfrm policy namespace cleanup handlers when cleaning up network namespaces. A local user can repeatedly create and tear down network namespaces to cause a denial of service.

The issue can cause cleanup backlogs, excessive memory growth, and memcg OOM conditions on affected systems.

8) Out-of-bounds read (CVE-ID: CVE-2026-64524)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to an out-of-bounds read in the Hyper-V DRM protocol resolution response parser when processing a crafted SYNTHVID_RESOLUTION_RESPONSE message. A remote attacker can send a specially crafted resolution response with an oversized resolution_count value to cause a denial of service.

The issue affects the drm/hyperv code path while parsing supported display resolutions from the host.

9) Out-of-bounds read (CVE-ID: CVE-2026-64243)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to an out-of-bounds read in simple_mux_control_put() when processing enumerated control values. A local user can supply an invalid enumerated item value to trigger an out-of-bounds read and cause a denial of service.

10) Double free (CVE-ID: CVE-2026-64242)

CWE-ID: CWE-415 - Double Free

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to double free in net2280_probe() error handling in the net2280 usb gadget driver when probing a device. A local user can trigger the probe error path to cause a denial of service.

11) Use of Out-of-range Pointer Offset (CVE-ID: CVE-2026-64240)

CWE-ID: CWE-823 - Use of Out-of-range Pointer Offset

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper pointer handling in the igorplugusb driver when initializing a USB control request URB. A local user can connect a crafted USB device to trigger an invalid setup packet interpretation and cause a denial of service.

12) Use-after-free (CVE-ID: CVE-2026-64239)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a use-after-free.

The vulnerability exists due to use-after-free in DAMON sysfs tried region directory handling when refreshing scheme tried region directories. A local user can repeatedly request directory refresh operations to cause a use-after-free.

The issue can be reproduced on kernels built with CONFIG_DEBUG_KOBJECT_RELEASE because delayed kobject release callbacks can leave freed region objects referenced from the linked list during directory regeneration.

13) Out-of-bounds read (CVE-ID: CVE-2026-64237)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a local user to disclose sensitive information.

The vulnerability exists due to an out-of-bounds read in the elan_i2c firmware update handler when processing a crafted firmware file. A local user can provide a specially crafted firmware file to disclose sensitive information.

14) NULL pointer dereference (CVE-ID: CVE-2026-64234)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a NULL pointer dereference in dma_handle_rx() in the pch_uart driver when handling DMA receive operations after coherent DMA buffer allocation fails. A local user can trigger allocation failure conditions to cause a denial of service.

15) Use-after-free (CVE-ID: CVE-2026-64233)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 5.6 [CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local privileged user to cause a use-after-free.

The vulnerability exists due to a use-after-free in uvc_function_bind() and descriptor handling for extension unit list walks when binding the UVC gadget function while concurrently removing an extension unit configfs directory. A local privileged user can bind the function and race configfs extension removal to cause a use-after-free.

Exploitation requires the ability to mount configfs and write gadget UDC files.

16) Double free (CVE-ID: CVE-2026-64222)

CWE-ID: CWE-415 - Double Free

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to double free in otx2_pool_aq_init() and cn20k_pool_aq_init() when handling allocation or mailbox synchronization failures during pool initialization. A local user can trigger the affected error path to cause a denial of service.

Exploitation requires OcteonTX2 or CN20K hardware.

17) Improper Check for Unusual or Exceptional Conditions (CVE-ID: CVE-2026-64131)

CWE-ID: CWE-754 - Improper Check for Unusual or Exceptional Conditions

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper check for unusual or exceptional conditions in mm/memory.c unmap path when unmapping device-private or exclusive pages from private file-backed mappings. A local user can trigger memory migration and unmapping operations to cause a denial of service.

The issue can result in a kernel warning during process teardown.

18) Use-after-free (CVE-ID: CVE-2026-64123)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 6.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to disclose sensitive information or cause a denial of service.

The vulnerability exists due to a use-after-free in the hsr node table handling code when processing generic-netlink node-list or node-status operations concurrently with RTM_DELLINK teardown. A local user can trigger concurrent netlink operations to disclose sensitive information or cause a denial of service.

The generic-netlink reader accesses node entries under RCU and may retain a node pointer while teardown frees the same entry.

19) Use-after-free (CVE-ID: CVE-2026-64099)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a use-after-free in the v3d CPU job ioctl error path when handling CPU job submission failures. A local user can trigger an error path with crafted CPU job submissions to cause a denial of service.

The same error path can also trigger a NULL dereference and leak one sync object reference per query.

20) Race condition (CVE-ID: CVE-2026-64095)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a race condition in the batman-adv bridge loop avoidance subsystem when handling concurrent backbone gateway state changes and request tracking. A local user can trigger concurrent operations to cause a denial of service.

The issue stems from non-atomic updates to request state and the bla.num_requests counter across multiple concurrent code paths.

21) NULL pointer dereference (CVE-ID: CVE-2026-64094)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a NULL pointer dereference in batman-adv bridge loop avoidance claim handling in net/batman-adv/bridge_loop_avoidance.c when sending an ARP request after a primary interface is decoupled from its mesh interface. A local user can trigger this race condition to cause a denial of service.

The issue occurs when the primary hard interface is accessed without rtnl_lock held and its mesh interface pointer becomes NULL during the operation.

22) Race condition (CVE-ID: CVE-2026-64093)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a race condition in batman-adv tp_meter timer handling in batadv_tp_sender_cleanup() when shutting down the sender timer during cleanup. A local user can trigger timer re-arming after cleanup to cause a denial of service.

The issue occurs because the timer may be re-armed after its reference has already been released.

23) Always-Incorrect Control Flow Implementation (CVE-ID: CVE-2026-64090)

CWE-ID: CWE-670 - Always-Incorrect Control Flow Implementation

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to improper handling of empty vlan responses in batman-adv translation table handling when processing indirect translation table replies from the global tt state. A remote attacker can trigger indirect translation table responses containing empty vlan data to cause a denial of service.

The issue affects replies generated indirectly by another node using the global tt state rather than only direct local translation table responses.

24) Memory corruption (CVE-ID: CVE-2026-64026)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause pagecache corruption.

The vulnerability exists due to memory corruption in the Linux kernel RxRPC recvmsg handling when decrypting locally transmitted DATA packets processed through splice(). A local user can trigger crafted local packet handling to cause pagecache corruption.

The issue affects in-place decryption of shared packet data, and MSG_PEEK may influence which packet is decrypted and require re-decryption during subsequent recvmsg() processing.

25) Out-of-bounds read (CVE-ID: CVE-2026-64014)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 5.2 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows an attacker with physical access to disclose sensitive information and cause a denial of service.

The vulnerability exists due to an out-of-bounds read in the nexio_read_data() function in the usbtouchscreen driver when processing a crafted device interrupt packet with falsified length fields. An attacker with physical access can provide a malicious USB device that reports oversized data_len and x_len values to disclose sensitive information and cause a denial of service.

Kernel memory contents may be exposed to userspace through reported ABS_X and ABS_Y input events.

26) NULL pointer dereference (CVE-ID: CVE-2026-64012)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a null pointer dereference in the sch_sfb packet scheduler when dequeuing packets from child qdiscs after a peek operation. A local user can trigger network traffic processing through a crafted qdisc hierarchy to cause a denial of service.

Exploitation requires the sfb scheduler to have child qdiscs whose peek callback uses qdisc_peek_dequeued().

27) Use-after-free (CVE-ID: CVE-2026-64011)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a use-after-free in llcp_sock_release() when releasing an LLCP socket in connecting state. A local user can trigger socket release in that state to cause a denial of service.

28) Use-after-free (CVE-ID: CVE-2026-64010)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a use-after-free race condition in nfc_llcp_recv_cc() when processing an NFC LLCP connection acceptance packet concurrently with socket release. A local user can trigger concurrent connection handling and socket release to cause a denial of service.

The issue occurs during a connection state transition when a socket can be moved from the connecting_sockets list to the sockets list after it has already been unlinked and marked for destruction.

29) Integer underflow (CVE-ID: CVE-2026-64009)

CWE-ID: CWE-191 - Integer underflow

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to an integer underflow leading to an out-of-bounds write in the esp component, specifically xfrm_state_mtu(), when processing a UDP datagram through an IPv4 ESP tunnel SA with attacker-controlled parameters. A local user can install a crafted IPv4 ESP tunnel SA and send a UDP datagram through the tunnel to cause a denial of service.

The issue involves a negative length being sign-extended to size_t before being passed to memset() in esp_output_fill_trailer().

30) Improper control of a resource through its lifetime (CVE-ID: CVE-2026-64006)

CWE-ID: CWE-664 - Improper control of a resource through its lifetime

CVSSv4: 6.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper handling of overlapping registers in nf_tables bitwise and byteorder operations when processing crafted nf_tables register operations. A local user can create overlapping source and destination register operations to cause incorrect packet filtering behavior and a denial of service.

Exploitation requires the ability to configure nf_tables rules.

31) Improper Initialization (CVE-ID: CVE-2026-64005)

CWE-ID: CWE-665 - Improper Initialization

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper initialization in the SMC hash tables in net/smc/af_smc.c when initializing the SMC subsystem. A local user can trigger use of corrupted hash list state to cause a denial of service.

The issue can occur when the hash tables are re-initialized after hash entries already exist and are in use, potentially resulting in a corrupted list.

32) Race condition (CVE-ID: CVE-2026-64004)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a race condition in the AF_IUCV getsockopt handler when racing recvmsg() with getsockopt(SO_MSGSIZE). A local user can trigger concurrent socket operations to cause a denial of service.

The issue can lead to a NULL pointer dereference in the kernel.

33) Always-Incorrect Control Flow Implementation (CVE-ID: CVE-2026-64003)

CWE-ID: CWE-670 - Always-Incorrect Control Flow Implementation

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper state handling in scsi_run_host_queues() when processing requeued commands during SCSI host recovery and device removal. A local user can trigger SCSI error recovery and device removal conditions to cause a denial of service.

The issue can leave requeued requests stuck and cause the affected device removal process to hang.

34) Use-after-free (CVE-ID: CVE-2026-64002)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a use-after-free in ipv4_sysctl_exit_net() when unregistering the IPv4 sysctl table while sysctl handlers may still access sysctl_local_reserved_ports. A local user can trigger access to the freed sysctl entry to cause a denial of service.

The issue affects access to /proc/sys/net/ipv4/ip_local_reserved_ports during network namespace sysctl teardown.

35) Use-after-free (CVE-ID: CVE-2026-64001)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a use-after-free in snd_pcm_oss_proc_write() and snd_pcm_oss_look_for_setup() when handling proc writes followed by a later OSS device open. A local user can trigger a proc write error that leaves a stale setup_list entry and then open an OSS device to dereference freed memory to cause a denial of service.

The issue arises because a newly allocated setup entry may be linked into setup_list before task name allocation completes.

36) NULL pointer dereference (CVE-ID: CVE-2026-63991)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a null pointer dereference in send_mcast_pkt() in the Bluetooth 6LoWPAN subsystem when processing multicast packets. A local user can trigger a memory allocation failure that leads to dereferencing a NULL skb pointer in send_pkt() to cause a denial of service.

37) NULL pointer dereference (CVE-ID: CVE-2026-63990)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a null-pointer dereference in the bonding driver when enslaving a CAN device to a bonding master. A local user can enslave a virtual CAN device to a bonding master to cause a denial of service.

The issue can be triggered with a virtual CAN device such as vxcan, and subsequent socket cleanup operations may access invalid CAN receiver state.

38) Improper input validation (CVE-ID: CVE-2026-63985)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper input validation in fallback_set_params() in the ethtool EEPROM Netlink fallback path when processing module EEPROM read parameters. A local user can supply an offset and length combination that exceeds the EEPROM bounds to cause a denial of service.

The issue affects the Netlink fallback path for reading module EEPROM and may lead to unexpected behavior in drivers or device firmware.

39) Improper locking (CVE-ID: CVE-2026-63980)

CWE-ID: CWE-667 - Improper Locking

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper lock handling in the net/handshake subsystem when canceling a TLS handshake from softirq context while the same lock is held in process context on the same CPU. A local user can trigger a TLS handshake cancellation race to cause a denial of service.

The issue results in a deadlock.

40) Improper control of a resource through its lifetime (CVE-ID: CVE-2026-63976)

CWE-ID: CWE-664 - Improper control of a resource through its lifetime

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to improper state management in the Bluetooth L2CAP ECRED reconfiguration response handler when processing a replayed failure response after a successful reconfiguration. A remote attacker can replay a failure response with a stale ident value to cause a denial of service.

The issue can destroy an already-established channel by causing the kernel to match a subsequent response against a recycled ident value.

41) Always-Incorrect Control Flow Implementation (CVE-ID: CVE-2026-63975)

CWE-ID: CWE-670 - Always-Incorrect Control Flow Implementation

CVSSv4: 7.1 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to improper handling of channel deletion during list iteration in l2cap_ecred_conn_rsp in the Bluetooth L2CAP subsystem when processing a crafted L2CAP credit-based connection response with an already-assigned destination CID. A remote attacker can send a specially crafted Bluetooth packet to cause a denial of service.

The issue occurs when a duplicate destination CID is received for an L2CAP extended credit based connection response.

42) Race condition (CVE-ID: CVE-2026-63974)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper synchronization in hci_dev_close_sync() in the Bluetooth HCI subsystem when closing a device during the reset path. A local user can trigger Bluetooth device reset and close operations to cause a denial of service.

43) NULL pointer dereference (CVE-ID: CVE-2026-63973)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a NULL pointer dereference in the mana network driver teardown path when cleaning up after a partial queue allocation failure. A local user can trigger queue allocation failure and subsequent teardown handling to cause a denial of service.

The issue can be reached through multiple teardown paths, including device removal, MTU change recovery, and internal error handling.

44) Race condition (CVE-ID: CVE-2026-63971)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSSv4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a race condition in sctp_wait_for_connect() in the SCTP socket implementation when waiting for an association to reach established state while another thread peels off the association to a new socket. A local user can trigger association migration during this window to cause a denial of service.

Exploitation requires concurrent access from another thread while the socket lock is dropped and re-acquired.

45) Infinite loop (CVE-ID: CVE-2026-63969)

CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper handling of a stale linked-list state in rt6_fill_node() when walking IPv6 route sibling entries during softirq-side processing. A local user can trigger route state changes to cause a CPU stall.

The issue can result in an infinite loop in the walker.

46) Infinite loop (CVE-ID: CVE-2026-63968)

CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local attacker to cause a denial of service.

The vulnerability exists due to an infinite loop in fib6_select_path() when walking IPv6 route sibling entries during softirq-side processing. A local attacker can trigger route processing to cause a denial of service.

The issue occurs because a detached sibling entry may still point into an old ring, preventing the walker from reaching its termination condition.

47) Use of Uninitialized Variable (CVE-ID: CVE-2026-63967)

CWE-ID: CWE-457 - Use of Uninitialized Variable

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a local user to disclose sensitive information.

The vulnerability exists due to uninitialized memory in the tagged FIFO buffer handling in st_lsm6dsx_buffer.c when copying FIFO sample data to userspace. A local user can read exposed uninitialized stack data to disclose sensitive information.

The issue affects the tagged FIFO path because a hole in the aligned stack structure is copied together with sample data and timestamp fields.

48) Improper input validation (CVE-ID: CVE-2026-63964)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local privileged user to cause a denial of service.

The vulnerability exists due to improper input validation in the do_flash() function in the ucsi_ccg driver when parsing a crafted firmware image without a ':' record header. A local privileged user can place a crafted firmware file under /lib/firmware and write to the do_flash sysfs attribute to cause a denial of service.

The issue can be triggered by an unsigned firmware blob reaching the flashing logic.

49) Out-of-bounds read (CVE-ID: CVE-2026-63961)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 2.4 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows an attacker with physical access to disclose sensitive information.

The vulnerability exists due to an out-of-bounds read in the DisplayPort altmode handler when processing a malformed Status Update VDO from a connected USB Type-C device. An attacker with physical access can send a device response with an incorrect VDO count to disclose sensitive information.

The issue can cause the kernel to read uninitialized stack data and forward it elsewhere.

50) Out-of-bounds write (CVE-ID: CVE-2026-63960)

CWE-ID: CWE-787 - Out-of-bounds write

CVSSv4: 5.1 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows an attacker with physical access to cause memory corruption.

The vulnerability exists due to an out-of-bounds write in wcove_read_rx_buffer() when processing a crafted USB Power Delivery frame from a connected port partner. An attacker with physical access can transmit a crafted 31-byte frame to cause memory corruption.

The issue occurs on the IRQ thread stack, and the final register read may write past the end of struct pd_message.

51) Out-of-bounds read (CVE-ID: CVE-2026-63959)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 2.4 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows an attacker with physical access to disclose sensitive information.

The vulnerability exists due to an out-of-bounds read in the tcpci_maxim RX message processing logic when processing a crafted USB Type-C/Power Delivery frame with a mismatched header data object count. An attacker with physical access can send a specially crafted frame to disclose sensitive information.

The issue occurs when a CRC-valid frame advertises more data objects in the header than are actually present in the message body.

52) Out-of-bounds write (CVE-ID: CVE-2026-63958)

CWE-ID: CWE-787 - Out-of-bounds write

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local attacker to cause a denial of service.

The vulnerability exists due to out-of-bounds write in ucsi_connector_change() when handling a crafted UCSI CCI notification with an invalid connector number. A local attacker can provide a bogus connector number to trigger work scheduling on memory past the end of the connector array to cause a denial of service.

Exploitation requires control of a buggy or malicious PPM, such as EC firmware or an attached UCSI controller on supported transports.

53) Out-of-bounds write (CVE-ID: CVE-2026-63957)

CWE-ID: CWE-787 - Out-of-bounds write

CVSSv4: 5.1 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows an attacker with physical access to cause memory corruption.

The vulnerability exists due to memory corruption in the safe_serial USB serial driver when processing a malicious USB device that reports a bulk-out endpoint size smaller than eight bytes in safe mode. An attacker with physical access can connect a crafted USB device to cause memory corruption.

Exploitation requires the target system to interact with a malicious USB device operating in safe mode.

54) Improper input validation (CVE-ID: CVE-2026-63956)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 5.2 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows an attacker with physical access to cause a denial of service or corrupt memory.

The vulnerability exists due to improper input validation in the cypress_m8 USB serial driver when processing a malicious USB device with a too-small interrupt-out endpoint max packet size. An attacker with physical access can connect a specially crafted USB device to cause a denial of service or corrupt memory.

The issue can be triggered if a device reports an interrupt-out endpoint max packet size smaller than eight bytes.

55) Improper Initialization (CVE-ID: CVE-2026-63954)

CWE-ID: CWE-665 - Improper Initialization

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper initialization in hpfs_check_free_dnodes in fs/hpfs/alloc.c when handling a failure from hpfs_map_dnode_bitmap. A local user can trigger the error path to cause a denial of service.

56) Improper access control (CVE-ID: CVE-2026-63952)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a local user to bypass write sealing protections and modify a memfd that appears to be write sealed.

The vulnerability exists due to improper access control in memfd_add_seals() in mm/memfd.c when adding SEAL_EXEC to a memfd with writable mappings. A local user can add a seal combination that implies SEAL_WRITE after the writable-mapping check to bypass write sealing protections and modify a memfd that appears to be write sealed.

The issue occurs because SEAL_EXEC implies SEAL_WRITE, but the implied seal was applied only after the check for writable mappings.

57) Out-of-bounds read (CVE-ID: CVE-2026-63949)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to an out-of-bounds read in linedisp_display() in the line-display auxdisplay subsystem when handling a zero-byte write to the message sysfs attribute. A local user can write zero bytes to the message sysfs attribute to cause a denial of service.

On KASAN-enabled kernels, the issue triggers an out-of-bounds report and panic.

58) Missing Release of Resource after Effective Lifetime (CVE-ID: CVE-2026-63948)

CWE-ID: CWE-772 - Missing Release of Resource after Effective Lifetime

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a reference leak in l2cap_chan_timeout() in the Bluetooth L2CAP subsystem when handling a channel timeout with a null connection pointer. A local user can trigger this condition to cause a denial of service.

59) Out-of-bounds read (CVE-ID: CVE-2026-63947)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 5.1 [CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a remote user to disclose sensitive information.

The vulnerability exists due to an out-of-bounds read in hidp_input_report() when processing truncated Bluetooth HIDP input packets. A remote user can send a specially crafted truncated packet to disclose sensitive information.

Exploitation requires a paired Bluetooth device.

60) Use-after-free (CVE-ID: CVE-2026-63946)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a use-after-free in iso_recv_frame in the Bluetooth ISO subsystem when processing received Bluetooth ISO frames. A local user can trigger concurrent socket teardown and frame handling to cause a denial of service.

Exploitation requires a race condition between frame reception and iso_sock_kill() freeing the socket.

61) Race condition (CVE-ID: CVE-2026-63945)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a race condition leading to a null pointer dereference or use-after-free in iso_sock_clear_timer in the Bluetooth ISO socket handling code when closing a socket concurrently with connection deletion. A local user can trigger concurrent socket operations to cause a denial of service.

62) Use-after-free (CVE-ID: CVE-2026-63944)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a use-after-free in hci_le_create_cis_sync in the Bluetooth HCI synchronization logic when processing concurrent Bluetooth connection state changes during LE Create CIS handling. A local user can trigger a concurrent disconnect to cause a denial of service.

The stale pointer is dereferenced after both rcu_read_lock() and hci_dev_lock(hdev) are released, and the queued cancellation path does not match the pending work item because it is queued with NULL data but dequeued with the connection pointer.

63) Out-of-bounds read (CVE-ID: CVE-2026-63943)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 5.1 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows an attacker with physical access to cause a denial of service.

The vulnerability exists due to an out-of-bounds read in xpadone_process_packet() when processing a crafted GIP_CMD_INPUT packet from a device. An attacker with physical access can supply a malformed controller packet with a short length to cause a denial of service.

The issue is triggered by a broken or malicious controller that controls both the reported packet length and packet contents.

64) Race condition (CVE-ID: CVE-2026-63942)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a race condition in the parport subsystem when port and client drivers are loaded around the same time during boot. A local user can load the lp and parport_pc modules concurrently to cause a crash.

The issue occurs because client drivers can attach to ports that are not completely initialized or are being torn down.

65) Use of Uninitialized Variable (CVE-ID: CVE-2026-63934)

CWE-ID: CWE-457 - Use of Uninitialized Variable

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a local user to disclose sensitive information.

The vulnerability exists due to improper access of uninitialized memory in the itg3200 triggered buffer handling path when processing i2c reads for all scan channels. A local user can read data from /dev/iio:deviceX to disclose sensitive information.

The non-buffered read_raw() path is unaffected.

66) Division by zero (CVE-ID: CVE-2026-63933)

CWE-ID: CWE-369 - Divide By Zero

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to division by zero in adis16260_write_raw in the adis16260 gyroscope driver when writing a zero value to the sampling_frequency sysfs attribute. A local user can write zero to the sampling_frequency sysfs attribute to cause a denial of service.

67) Division by zero (CVE-ID: CVE-2026-63931)

CWE-ID: CWE-369 - Divide By Zero

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to division by zero in the scd30_write_raw function when writing a zero fractional part to the sampling_frequency sysfs attribute. A local user can write a zero fractional value to the sampling_frequency sysfs attribute to cause a denial of service.

68) Use-after-free (CVE-ID: CVE-2026-63930)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a use-after-free in iio_hw_consumer_alloc() when cleaning up buffers in the error path. A local user can trigger the vulnerable cleanup path to cause a denial of service.

69) Out-of-bounds write (CVE-ID: CVE-2026-63928)

CWE-ID: CWE-787 - Out-of-bounds write

CVSSv4: 5.1 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows an attacker with physical access to cause memory corruption.

The vulnerability exists due to memory corruption in the omninet USB serial driver bulk-out buffer handling when processing a malicious USB device that reports a smaller endpoint max packet size than expected. An attacker with physical access can connect a crafted USB device to cause memory corruption.

The issue can lead to user-controlled slab corruption.

70) Use-after-free (CVE-ID: CVE-2026-63927)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to use-after-free in the dwc2 USB host controller driver debug code when dequeuing a usb request block and logging its status after calling usb_hcd_giveback_urb(). A local user can trigger URB handling to cause a denial of service.

The issue occurs in debug logging within the _dwc2_hcd_urb_dequeue() path.

71) Incorrect calculation (CVE-ID: CVE-2026-63926)

CWE-ID: CWE-682 - Incorrect Calculation

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper offset calculation in bpf_msg_push_data() in the sockmap BPF subsystem when inserting data into the middle of a scatterlist entry. A local user can trigger the inconsistent split layout to cause a denial of service.

Exploitation requires access to BPF sockmap functionality.

72) Integer overflow (CVE-ID: CVE-2026-63925)

CWE-ID: CWE-190 - Integer overflow

CVSSv4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to bypass replay protection.

The vulnerability exists due to an integer overflow in macsec_post_decrypt() when processing a crafted replayed frame on an XPN association with a packet number of 0xffffffff. A remote attacker can replay a captured legitimate frame to bypass replay protection.

Exploitation requires capturing a legitimate frame carrying the maximum 32-bit packet number on an XPN association.

73) Improper access control (CVE-ID: CVE-2026-63921)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a local user to redirect packets across network namespaces.

The vulnerability exists due to improper access control in vti6_siocdevprivate() in the IPv6 VTI tunnel handling code when processing SIOCCHGTUNNEL requests on a migrated tunnel. A local user can supply tunnel parameters that collide with a tunnel in the creation namespace to redirect packets across network namespaces.

Exploitation is reachable from an unprivileged user namespace and can have cross-tenant scope on container hosts.

74) Out-of-bounds read (CVE-ID: CVE-2026-63920)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a local user to disclose sensitive information.

The vulnerability exists due to an out-of-bounds read in ip6_datagram_recv_specific_ctl() when processing IPv6 extension headers for recvmsg control messages after the hdrlen field is modified. A local user can use an nftables payload-write expression to corrupt the extension header length and trigger copying beyond the available header data to disclose sensitive information.

Exploitation is reachable from an unprivileged user namespace.

75) Use-after-free (CVE-ID: CVE-2026-63919)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a use-after-free in xfrm transport-mode deferred reinjection handling in net/xfrm/xfrm_input.c when processing deferred transport reinjection callbacks that use a stored network namespace pointer. A local user can trigger deferred transport reinjection with a dangling net namespace reference to cause a denial of service.

76) Use-after-free (CVE-ID: CVE-2026-63917)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a use-after-free in the vti6 tunnel handling code in net/ipv6/ip6_vti.c when changing the configuration of a vti6 device after moving it across network namespaces. A local user can move a vti6 device between namespaces and then change its link parameters to cause a denial of service.

The issue is reachable from an unprivileged user namespace and may have cross-tenant impact on container hosts.

77) Out-of-bounds write (CVE-ID: CVE-2026-63916)

CWE-ID: CWE-787 - Out-of-bounds write

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to an out-of-bounds write in wacom_hid_set_device_mode() when handling a HID feature report where HID_DG_INPUTMODE is mapped to a field other than the first one. A local user can connect or emulate a crafted device to trigger the out-of-bounds write and cause a denial of service.

The issue occurs when the first field in the feature report has a report_count smaller than the usage index of HID_DG_INPUTMODE.

78) Out-of-bounds read (CVE-ID: CVE-2026-63915)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 7.1 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to out-of-bounds read in HCP header parsing in nfc_hci_recv_from_llc() and nci_hci_data_received_cb() when processing a 0-byte HCP frame from an NFC peer. A remote attacker can send a malformed HCP frame to cause a denial of service.

A non-final fragmented 0-byte frame can also underflow the reassembly length to UINT_MAX and trigger skb_over_panic() during reassembly.

79) Improper access control (CVE-ID: CVE-2026-63914)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a local user to disclose sensitive information.

The vulnerability exists due to improper access control in xfrm migrate notification handling in net/xfrm/xfrm_user.c and net/key/af_key.c when broadcasting successful XFRM_MSG_MIGRATE or SADB_X_MIGRATE events across network namespaces. A local user can trigger a migration notification from a non-init network namespace to disclose sensitive information.

An IKE daemon running in the initial network namespace may receive migration notifications originating from other network namespaces, including selector, old and new endpoint addresses, and the km_address.

80) Insufficient verification of data authenticity (CVE-ID: CVE-2026-63913)

CWE-ID: CWE-345 - Insufficient Verification of Data Authenticity

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to improper state validation in the TCP conntrack state machine in netfilter conntrack when processing a crafted SYN followed by an invalid-sequence RST packet. A remote attacker can send a specially crafted packet sequence to cause a denial of service.

The issue can prematurely terminate an active NAT entry by forcing the conntrack entry into the CLOSE state.

81) Out-of-bounds read (CVE-ID: CVE-2026-63909)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to disclose sensitive information.

The vulnerability exists due to an out-of-bounds read in smb_check_perm_dacl() ACE-walk loops in ksmbd when processing SMB2_CREATE operations with a crafted security descriptor. A remote attacker can send a specially crafted request to disclose sensitive information.

The issue is caused by a transposed bounds check that can leave the loop guard ineffective and permit reading ace->size even when only 0 to 3 bytes remain in the ACE data.

82) Out-of-bounds write (CVE-ID: CVE-2026-63908)

CWE-ID: CWE-787 - Out-of-bounds write

CVSSv4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a local user to overwrite adjacent memory.

The vulnerability exists due to an out-of-bounds write in mxt_prepare_cfg_mem in the atmel_mxt_ts driver when parsing a crafted configuration file with an object size larger than the expected object size. A local user can provide a specially crafted configuration file to overwrite adjacent memory.

The issue is caused by an incorrect boundary check on a 0-based index, which allows exactly one byte past the valid object boundary to be written.

83) Use-after-free (CVE-ID: CVE-2026-63906)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to use-after-free in omap2430_probe() in the omap2430 USB driver when handling a crafted platform device state. A local user can trigger the vulnerable code path to cause a denial of service.

The issue occurs because a device tree node reference is released before its last access in both the success and error paths.

84) Use-after-free (CVE-ID: CVE-2026-63905)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to use-after-free in vudc_remove() and the vudc transfer timer handling when racing device teardown with a pending or executing timer. A local user can repeatedly trigger unbind and rebind operations while the timer is active to cause a denial of service.

The issue is triggered by a race condition during the unplug or unbind path.

85) Out-of-bounds read (CVE-ID: CVE-2026-63904)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 2.4 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a local attacker to disclose sensitive information.

The vulnerability exists due to an out-of-bounds read in the usbtmc interrupt notification handling in drivers/usb/class/usbtmc.c when processing interrupt-in notifications with an insufficient URB actual_length. A local attacker can provide a crafted USBTMC device that sends a short notification to disclose sensitive information.

The issue can also cause stale leftover data from a previous notification to be consumed.

86) Out-of-bounds read (CVE-ID: CVE-2026-63903)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a local attacker to disclose sensitive information.

The vulnerability exists due to an out-of-bounds read in the belkin_sa_read_int_callback() USB serial interrupt handler when processing short successful interrupt transfers. A local attacker can trigger the driver to parse a crafted short interrupt packet to disclose sensitive information.

The issue occurs because the handler treats interrupt data as a four-byte status report and reads status fields at offsets 2 and 3 even when the completed packet is shorter.

87) Out-of-bounds read (CVE-ID: CVE-2026-63902)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local attacker to cause a denial of service.

The vulnerability exists due to an out-of-bounds read in cypress_read_int_callback() in the cypress_m8 USB serial driver when processing malformed short interrupt packets. A local attacker can provide a specially crafted short interrupt report to cause a denial of service.

Successful interrupt transfers can complete with fewer bytes than required for the selected Cypress packet header format.

88) Improper input validation (CVE-ID: CVE-2026-63901)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 5.2 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows an attacker with physical access to cause memory corruption.

The vulnerability exists due to improper input validation in the digi_acceleport USB serial driver when handling a malicious USB device that reports smaller bulk-out buffers than expected. An attacker with physical access can connect a crafted device to cause memory corruption.

The issue can lead to out-of-bounds memory accesses or slab corruption.

89) Out-of-bounds read (CVE-ID: CVE-2026-63900)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 2.4 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a local attacker to disclose sensitive information.

The vulnerability exists due to an out-of-bounds read in the usa49wg indat transfer parser in drivers/usb/serial/keyspan.c when parsing malformed indat packets from a USB device. A local attacker can provide a specially crafted USB device to disclose sensitive information.

The issue can cause parsing of stale or uninitialised slab data.

90) Out-of-bounds write (CVE-ID: CVE-2026-63899)

CWE-ID: CWE-787 - Out-of-bounds write

CVSSv4: 5.1 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows an attacker with physical access to cause memory corruption.

The vulnerability exists due to memory corruption in the mxuport USB serial driver when handling a malicious USB device that reports a bulk-out endpoint max packet size smaller than eight bytes. An attacker with physical access can attach a crafted device to cause memory corruption.

91) Out-of-bounds write (CVE-ID: CVE-2026-63898)

CWE-ID: CWE-787 - Out-of-bounds write

CVSSv4: 5.1 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows an attacker with physical access to cause memory corruption.

The vulnerability exists due to memory corruption in the mct_u232 USB serial driver when handling a malicious USB device that reports a smaller endpoint maximum packet size than expected. An attacker with physical access can connect a specially crafted USB device to cause memory corruption.

92) Out-of-bounds read (CVE-ID: CVE-2026-63897)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a local user to disclose sensitive information.

The vulnerability exists due to an out-of-bounds read in the mct_u232 USB serial driver interrupt-in transfer handler when processing short interrupt-in transfers. A local user can trigger the driver to process a specially crafted short interrupt-in packet to disclose sensitive information.

The issue can lead to stale or uninitialized slab data being exposed to user space.

93) Integer overflow (CVE-ID: CVE-2026-63896)

CWE-ID: CWE-190 - Integer overflow

CVSSv4: 5.1 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to an integer underflow leading to an out-of-bounds write in the WebUSB GET_URL handler in composite_setup() when processing a crafted USB SETUP packet. A remote attacker can send a specially crafted USB request to cause a denial of service.

Exploitation is possible against gadgets with webusb/use=1 and a landing page configured.

94) Out-of-bounds read (CVE-ID: CVE-2026-63895)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 5.6 [CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a local privileged user to disclose sensitive information.

The vulnerability exists due to an out-of-bounds read in ffs_ep0_read() in the FunctionFS gadget implementation when handling a short ep0 control-OUT read. A local privileged user can trigger a short control-OUT transfer and read back uninitialized kernel heap memory to disclose sensitive information.

The issue is reachable through the FunctionFS device node and requires access to the privileged gadget daemon context. Reproducing the condition also requires bypassing normal host-side checks that usually reject short-wLength control-OUT requests before they reach the gadget.

95) Integer overflow (CVE-ID: CVE-2026-63893)

CWE-ID: CWE-190 - Integer overflow

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to disclose sensitive information.

The vulnerability exists due to an integer overflow leading to an out-of-bounds read in tb_property_entry_valid() in the thunderbolt property parser when processing a crafted XDomain property block from a peer device. A remote attacker can send crafted property entries with wrapped value and length fields to disclose sensitive information.

For TEXT-typed entries using the "deviceid" or "vendorid" keys, leaked data may be exposed through the per-XDomain sysfs device_name or vendor_name attributes. The disclosed data is NUL-bounded and the attacker controls an offset rather than an absolute address.

96) Out-of-bounds read (CVE-ID: CVE-2026-63892)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to an out-of-bounds read and integer underflow in __tb_property_parse_dir() in the thunderbolt property parser when parsing a crafted non-root property directory with dir_len less than 4. A local user can provide crafted property data to trigger out-of-bounds memory access and cause a denial of service.

The issue affects the non-root parsing path, where a short directory length can cause a UUID copy to read past the end of the property block and can also cause entry walking to continue out of bounds until the kernel oopses.

97) Uncontrolled Recursion (CVE-ID: CVE-2026-63891)

CWE-ID: CWE-674 - Uncontrolled Recursion

CVSSv4: 7.1 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to uncontrolled recursion in __tb_property_parse_dir() in the thunderbolt property parser when processing a crafted PROPERTIES_REQUEST control-plane exchange containing chained DIRECTORY entries with a back-reference loop. A remote attacker can send crafted XDomain property data to cause a denial of service.

The issue can be triggered by an untrusted XDomain peer such as a cable, dock, in-line inspector, or adjacent host.

98) Improper input validation (CVE-ID: CVE-2026-63890)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 7.1 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to improper input validation in fcoe_ctlr_recv_clr_vlink() in drivers/scsi/fcoe/fcoe_ctlr.c when processing FIP CVL frames. A remote attacker can send a crafted FIP CVL frame with a zero-length non-critical descriptor to cause a denial of service.

Exploitation is limited to an unauthenticated layer 2 peer on the FCoE control VLAN and can block subsequent FIP frames on the affected controller.

99) Integer overflow (CVE-ID: CVE-2026-63889)

CWE-ID: CWE-190 - Integer overflow

CVSSv4: 7.1 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to an infinite loop caused by an integer truncation error in the FPIN pname walker in scsi_transport_fc when processing a crafted FPIN ELS frame. A remote attacker can send a crafted Fibre Channel fabric frame to cause a denial of service.

Exploitation requires the ability to inject Fibre Channel fabric traffic to an lpfc or qla2xxx Linux initiator, such as from a compromised switch or fabric controller, or from a same-zone N_Port on a fabric that permits source spoofing.

100) Use-after-free (CVE-ID: CVE-2026-63884)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a use-after-free in the i915 TTM object purge logic when purging an object during eviction after validating buffer object placement. A local user can trigger the purge path through crafted GPU memory management operations to cause a denial of service.

The issue was reported under heavy use on DG2 systems and occurs because the associated i915 TTM page vector container may be replaced while the object is still busy.

101) Integer underflow (CVE-ID: CVE-2026-63883)

CWE-ID: CWE-191 - Integer underflow

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a local user to disclose stale buffer data.

The vulnerability exists due to an integer underflow in qcom_geni_serial_handle_tx_dma() when handling a DMA completion interrupt after uart_flush_buffer() resets the transmit buffer. A local user can trigger a flush before DMA completion is processed to disclose stale buffer data.

The issue is caused by a race condition between transmit buffer flushing and delayed DMA completion handling.

102) NULL pointer dereference (CVE-ID: CVE-2026-63882)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a null pointer dereference in svm_range_set_attr in the amdkfd SVM subsystem when handling a kfd_ioctl_svm call without a prior kfd_ioctl_acquire_vm call. A local user can invoke the affected ioctl sequence to cause a denial of service.

103) Integer overflow (CVE-ID: CVE-2026-63881)

CWE-ID: CWE-190 - Integer overflow

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to integer overflow in get_queue_ids() in the amdkfd kfd debugger when processing a user-supplied queue ID array. A local user can supply crafted queue count values to cause a denial of service.

The issue affects 32-bit size_t builds.

104) NULL pointer dereference (CVE-ID: CVE-2026-63877)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local attacker to cause a denial of service.

The vulnerability exists due to a null pointer dereference in the dz serial driver when initializing the first serial port. A local attacker can trigger serial port initialization to cause a denial of service.

The crash occurs because a pointer derived from a null parent-device pointer is dereferenced during early system bootstrap.

105) NULL pointer dereference (CVE-ID: CVE-2026-63876)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a null pointer dereference in the zs serial driver during serial port initialization when initializing the first serial port. A local user can trigger driver initialization to cause a denial of service.

The issue can crash the kernel during system bootstrap on affected DECstation systems.

106) Operation on a Resource after Expiration or Release (CVE-ID: CVE-2026-63875)

CWE-ID: CWE-672 - Operation on a Resource after Expiration or Release

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper cache invalidation in arm64 TLB flushing logic when unsharing PMD tables. A local user can trigger PMD table unsharing to cause a denial of service.

The issue can leave a stale PMD page table entry in the walk cache, which may result in incorrect page table walks.

107) Race condition (CVE-ID: CVE-2026-63871)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a race condition in Bluetooth ISO socket handling in net/bluetooth/iso.c when calling hci_get_route() on iso_pi socket fields without holding the socket lock. A local user can trigger concurrent connect() or setsockopt() operations on the same socket to cause a denial of service.

The issue was reported by KCSAN as a data race during Bluetooth ISO connection and listening operations.

108) Use of uninitialized resource (CVE-ID: CVE-2026-63870)

CWE-ID: CWE-908 - Use of Uninitialized Resource

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to use of uninitialized memory in lowpan_xmit() in the ieee802154 6LoWPAN transmit path when processing a non-IPv6 packet queued for transmission on a 6LoWPAN interface. A local user can queue a non-IPv6 packet for transmission to cause a denial of service.

The issue occurs because address information in skb headroom may remain uninitialized and is later copied and used by the transmit path.

109) Out-of-bounds write (CVE-ID: CVE-2026-63869)

CWE-ID: CWE-787 - Out-of-bounds write

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to an out-of-bounds shift in ieee80211_parse_tx_radiotap() when parsing the radiotap header of an injected frame. A local user can supply a crafted frame from userspace to cause a denial of service.

The issue is triggered by the IEEE80211_RADIOTAP_ANTENNA value being used directly as a shift count, and larger antenna indices cannot be represented by the 2-bit bitmap.

110) Integer underflow (CVE-ID: CVE-2026-63868)

CWE-ID: CWE-191 - Integer underflow

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to an unsigned integer underflow in garp_pdu_parse_attr in the GARP receive-side attribute parser when parsing crafted GARP attributes. A remote attacker can send crafted Join or Leave events to cause a denial of service.

The issue can cause received GARP events for common attributes, such as GVRP VLAN registration attributes, to be ignored.

111) Time-of-check Time-of-use (TOCTOU) Race Condition (CVE-ID: CVE-2026-63867)

CWE-ID: CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to cause inconsistent MPTCP receiver window signaling.

The vulnerability exists due to a time-of-check time-of-use race in the MPTCP DSS option handling in net/mptcp/options.c when processing and emitting MPTCP acknowledgments on outgoing packets. A remote attacker can trigger packet processing that causes inconsistent ack_seq values to be used to confuse the peer.

The issue arises because the MPTCP-level ack_seq was accessed locklessly multiple times, allowing different values to be used for the DSS data acknowledgment and the announced receive window within the same packet.

112) Improper locking (CVE-ID: CVE-2026-53358)

CWE-ID: CWE-667 - Improper Locking

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper locking in l2cap_sock_cleanup_listen() when cleaning up listening L2CAP channels. A local user can trigger a race condition to cause a denial of service.

The issue involves incorrect lock ordering between conn->lock, chan->lock, and sk_lock during Bluetooth L2CAP channel cleanup.

113) Use of Out-of-range Pointer Offset (CVE-ID: CVE-2026-53356)

CWE-ID: CWE-823 - Use of Out-of-range Pointer Offset

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a local user to disclose or modify unintended memory contents.

The vulnerability exists due to improper pointer handling in i915_gem_object_pread_phys and i915_gem_object_pwrite_phys in the i915 GEM physical buffer object handling code when processing pread or pwrite operations with a non-zero offset. A local user can supply crafted offset values to access the wrong parts of a physical buffer object to disclose or modify unintended memory contents.

The issue affects physical buffer objects on impacted platforms using overlay or cursor planes with physical mapping.

114) Improper Check for Unusual or Exceptional Conditions (CVE-ID: CVE-2026-53353)

CWE-ID: CWE-754 - Improper Check for Unusual or Exceptional Conditions

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper handling of a missing internal state in hsr_addr_is_self() when processing packets during device teardown. A local user can send packets through an HSR device during the teardown window to cause a kernel warning.

The issue occurs in a window where the device remains discoverable after self_node has been cleared.

115) Race condition (CVE-ID: CVE-2026-53352)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a race condition in zap_other_threads() when handling a concurrent execve() during a pending group stop. A local user can trigger this race to cause a denial of service.

The issue occurs when a multithreaded process receives a stop signal while one thread concurrently calls execve().

116) NULL pointer dereference (CVE-ID: CVE-2026-53350)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a null pointer dereference in wm_adsp_control_remove() when removing firmware controls. A local user can trigger removal of a control without associated private control data to cause a denial of service.

The issue occurs for controls where private data is not created, including SYSTEM controls and controls hidden by a codec driver's control_add() callback.

117) Use-after-free (CVE-ID: CVE-2026-53349)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 5.6 [CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local privileged user to cause a denial of service.

The vulnerability exists due to a use-after-free in netfilter nf_conntrack expectation handling when processing an expected connection after a NAT helper module has been unloaded. A local privileged user can unload a NAT helper module while live expectations remain and then trigger the expected connection to cause a denial of service.

Reaching the vulnerable state requires CAP_SYS_MODULE in the initial user namespace to remove a NAT helper that still has live expectations.

118) Use of uninitialized resource (CVE-ID: CVE-2026-53347)

CWE-ID: CWE-908 - Use of Uninitialized Resource

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to access of uninitialized data in the virtio-gpu driver removal path when removing or unbinding the driver with KMS disabled. A local user can trigger driver removal or unbinding to cause a denial of service.

Only configurations where the virtio-gpu driver is built with KMS disabled are affected.

119) Improper Check or Handling of Exceptional Conditions (CVE-ID: CVE-2026-53345)

CWE-ID: CWE-703 - Improper Check or Handling of Exceptional Conditions

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper handling of a warning condition in KVM memory dirty page tracking in virt/kvm/kvm_main.c when destroying a vCPU after certain SEV-ES VM-Exits without a subsequent KVM_RUN. A local user can trigger this condition to cause a denial of service.

The issue occurs in SEV-ES guest scenarios where KVM retains a writable mapping of a guest page across an exit to userspace.

120) Memory corruption (CVE-ID: CVE-2026-53343)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local attacker to cause a denial of service.

The vulnerability exists due to improper memory access in __switch_to() when performing a dummy read from the KASAN VMAP stack shadow. A local attacker can trigger execution on an affected ARM system to cause a denial of service.

Only ARM systems with CONFIG_KASAN_VMALLOC and CONFIG_VMAP_STACK enabled are affected, and the issue can cause an alignment exception before reaching init.

121) NULL pointer dereference (CVE-ID: CVE-2026-53339)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a NULL pointer dereference in cci_remove() in the i2c-qcom-cci driver when removing or unbinding the driver on systems where only one I2C master is initialized. A local user can trigger device unbinding or driver removal to cause a denial of service.

Only systems where the Qualcomm CCI controller exposes two I2C masters but only one master is enabled are affected.

122) NULL pointer dereference (CVE-ID: CVE-2026-53337)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local privileged user to cause a denial of service.

The vulnerability exists due to a NULL pointer dereference in bond_do_ioctl() when handling bonding ioctl requests with a non-existent slave interface name. A local privileged user can send a bonding ioctl request referencing a non-existent slave interface to cause a denial of service.

The issue is reachable from userspace through the bonding ioctl interface.

123) Infinite loop (CVE-ID: CVE-2026-53336)

CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local attacker to cause a denial of service.

The vulnerability exists due to an infinite loop in the onie-tlv nvmem layout driver when parsing EEPROM entries with unknown types. A local attacker can provide a crafted EEPROM image containing a vendor-specific or otherwise unknown TLV entry to cause a denial of service.

124) Use of Uninitialized Variable (CVE-ID: CVE-2026-53332)

CWE-ID: CWE-457 - Use of Uninitialized Variable

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local attacker to cause a denial of service.

The vulnerability exists due to use of uninitialized data in the qcom-ngd-ctrl driver when callbacks are triggered during NGD driver probing before device initialization completes. A local attacker can trigger parallel remoteproc startup or hardware interrupt handling to cause a denial of service.

The issue can prevent affected boards from booting.

125) Improper locking (CVE-ID: CVE-2026-53331)

CWE-ID: CWE-667 - Improper Locking

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper lock handling in qcom_slim_ngd_ssr_pdr_notify() and slim_report_absent() when processing SSR/PDR down notifications. A local user can trigger the vulnerable locking sequence to cause a denial of service.

The issue arises from inconsistent lock ordering between ctrl->tx_lock and ctrl->lock, creating a possible deadlock.

126) Integer overflow (CVE-ID: CVE-2026-53329)

CWE-ID: CWE-190 - Integer overflow

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to an integer overflow in dal_vector_reserve() in the AMD display vector implementation when resizing a vector buffer. A local user can trigger allocation size wraparound to cause a denial of service.

Successful exploitation can lead to a heap overflow on subsequent vector appends.

127) Use-after-free (CVE-ID: CVE-2026-53275)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 7.1 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to use-after-free in __mld_query_work in net/ipv6/mcast.c when processing crafted MLD queries. A remote attacker can send a specially crafted MLD query packet to cause a denial of service.

The issue occurs because a pointer to the multicast group address is dereferenced after skb header reallocation following pskb_may_pull() calls.

128) Improper locking (CVE-ID: CVE-2026-53274)

CWE-ID: CWE-667 - Improper Locking

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a logic flaw in __smc_setsockopt() when copying user-supplied socket option data while holding the socket lock. A local user can pass a userfaultfd-monitored or FUSE-backed memory page as the optval argument to cause a denial of service.

Exploitation can keep the socket lock held indefinitely and, when combined with asynchronous tear-down operations such as shutdown(), can exhaust kernel worker threads and trigger the hung task watchdog.

129) Use-after-free (CVE-ID: CVE-2026-53273)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a use-after-free in the optee supplicant request handling in drivers/tee/optee/supp.c when a client exits before the supplicant finishes processing its request. A local user can trigger a race condition to cause a denial of service.

The issue occurs because the request can be freed by the client while its request ID remains referenced on the supplicant path.

130) Use-after-free (CVE-ID: CVE-2026-53270)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local privileged user to cause a denial of service.

The vulnerability exists due to a use-after-free in the IPVS scheduler handling in ip_vs_edit_service() when editing a service and unbinding the old scheduler. A local privileged user can trigger service reconfiguration while packets are being scheduled to cause a denial of service.

The issue occurs because packets may continue using the old scheduler after its scheduling data has been freed following an RCU grace period.

131) Race condition (CVE-ID: CVE-2026-53269)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a race condition in the synproxy hook reference counting logic in netfilter when concurrently adding the first iptables target or nftables expression. A local user can trigger concurrent registration or teardown operations to cause a denial of service.

The issue affects on-demand netfilter hook registration performed by the SYNPROXY infrastructure from both iptables and nftables frontends.

132) Out-of-bounds read (CVE-ID: CVE-2026-53268)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to out-of-bounds read in the conntrack_irc helper when parsing IRC DCC commands. A remote attacker can send specially crafted IRC traffic to cause a denial of service.

133) Stack-based buffer overflow (CVE-ID: CVE-2026-53267)

CWE-ID: CWE-121 - Stack-based buffer overflow

CVSSv4: 6.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause memory corruption.

The vulnerability exists due to a stack-based buffer overflow in nft_ct_get_eval and nft_ct_get_fast_eval in the netfilter nft_ct subsystem when processing a crafted nftables rule that uses a template conntrack object. A local user can create a crafted rule sequence to cause memory corruption.

The issue is triggered when a conntrack template created by a preceding expression is treated as a real conntrack entry by a subsequent expression on the same skb.

134) Improper control of a resource through its lifetime (CVE-ID: CVE-2026-53266) Exploited

CWE-ID: CWE-664 - Improper control of a resource through its lifetime

CVSSv4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper memory handling in the ebtables SNAT target ARP sender hardware address rewrite in net/bridge/netfilter/ebt_snat.c when processing ARP packets in bridge netfilter hooks. A local user can trigger ARP sender hardware address rewriting on a crafted nonlinear skb to cause a denial of service.

Exploitation requires the ARP sender hardware address rewrite path to be reached with a nonlinear skb fragment backed by a splice-imported file page.

135) Time-of-check Time-of-use (TOCTOU) Race Condition (CVE-ID: CVE-2026-53265)

CWE-ID: CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a check-then-act race condition in smq_invalidate_mapping() in the dm-cache-policy-smq component when invalidating cache blocks concurrently. A local user can trigger concurrent invalidation operations to cause a denial of service.

The issue can corrupt the SMQ queues or hash table and may result in a double free condition.

136) Use-after-free (CVE-ID: CVE-2026-53264)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a use-after-free in the net/sched action lifecycle handling in act_api when NEWTFILTER and DELFILTER are run concurrently. A local user can trigger concurrent filter operations to cause a denial of service.

The issue arises from a race between action lookup and action deletion under RCU-protected access.

137) Off-by-one (CVE-ID: CVE-2026-53263)

CWE-ID: CWE-193 - Off-by-one Error

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to disclose sensitive information.

The vulnerability exists due to an off-by-one error in lowpan_iphc_mcast_ctx_addr_compress() when compressing multicast context addresses. A remote attacker can send network traffic that triggers the vulnerable compression path to disclose sensitive information.

Uninitialized kernel stack memory may be transmitted over the network via lowpan_push_hc_data().

138) Use-after-free (CVE-ID: CVE-2026-53262)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 7.3 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service or execute arbitrary code.

The vulnerability exists due to use-after-free in pppol2tp_ioctl() when processing ioctl requests while a concurrent socket close frees the associated l2tp_session after a controllable sleep during copy_from_user(). A local user can trigger a userfaultfd-assisted page fault sleep and race a socket close to dereference a stale session pointer to cause a denial of service or execute arbitrary code.

Exploitation requires local access to issue the ioctl and induce the race condition.

139) Memory leak (CVE-ID: CVE-2026-53261)

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a memory leak in devlink_free() when freeing an unregistered devlink instance with a nested relation. A local user can trigger a probe failure after creating such a relation to cause a denial of service.

This can occur when a child devlink is linked to its parent before registration and the probe later fails.

140) Use-after-free (CVE-ID: CVE-2026-53256)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to a use-after-free in rfcomm_connect_ind() and rfcomm_get_sock_by_channel() when handling RFCOMM connection indications for a listener socket during a concurrent close. A remote attacker can trigger a race condition to cause a denial of service.

The issue occurs in the Linux kernel Bluetooth RFCOMM socket handling path when a listener socket is closed while a child socket is being queued, and KASAN reported the resulting slab-use-after-free in lock_sock_nested().

141) Out-of-bounds read (CVE-ID: CVE-2026-53255)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a local user to disclose sensitive information.

The vulnerability exists due to an out-of-bounds read in the tlv_data_is_valid() advertising data parser in net/bluetooth/mgmt.c when processing a crafted MGMT_OP_ADD_ADVERTISING request. A local user can send a specially crafted advertising data field to disclose sensitive information.

The issue is triggered when a malformed field length byte appears at the end of the supplied buffer.

142) Out-of-bounds read (CVE-ID: CVE-2026-53254)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 7.1 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to out-of-bounds read in the Bluetooth RFCOMM MCC handlers when processing truncated MCC frames from a remote Bluetooth device. A remote attacker can send specially crafted truncated MCC frames to cause a denial of service.

The issue affects the RFCOMM MCC handling paths including rfcomm_recv_mcc(), rfcomm_recv_pn(), rfcomm_recv_rpn(), rfcomm_recv_rls(), and rfcomm_recv_msc().

143) Out-of-bounds read (CVE-ID: CVE-2026-53253)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to an out-of-bounds read in bnep_rx_frame() and bnep_rx_control() in the BNEP packet parser when processing short BNEP frames. A remote attacker can send a specially crafted short BNEP SDU to cause a denial of service.

The issue is triggered by malformed control packets with missing fixed fields or an empty control payload.

144) Memory leak (CVE-ID: CVE-2026-53252)

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a memory leak in bt_host_release() when handling failed Bluetooth HCI device initialization before hci_register_dev() completes. A local user can trigger device initialization failures to cause a denial of service.

The issue occurs because the unregistered device cleanup path bypasses hci_release_dev(), leaving the SRCU structure allocated in hci_alloc_dev() uncleared.

145) Improper update of reference count (CVE-ID: CVE-2026-53251)

CWE-ID: CWE-911 - Improper Update of Reference Count

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper reference count management in iso_conn_big_sync when handling Bluetooth ISO BIG sync operations. A local user can trigger the vulnerable code path to cause a denial of service.

146) Improper access control (CVE-ID: CVE-2026-53249)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a local user to disclose sensitive information.

The vulnerability exists due to improper access control in ip_options_get() in net/ipv4/ip_options.c when setting IPv4 Loose Source and Record Route or Strict Source and Record Route options. A local user can set crafted IP options to force packets through attacker-controlled nodes to disclose sensitive information.

Exposure depends on network paths that support and forward these IPv4 options.

147) Improper input validation (CVE-ID: CVE-2026-53245)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 7.1 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to improper input validation in mrp_pdu_parse_vecattr when parsing crafted MRP vector attributes in protocol data units. A remote attacker can send a specially crafted MRP packet to cause a denial of service.

The issue can be triggered when a VectorAttribute uses a zero-length value set or event counts that cross byte boundaries.

148) Race condition (CVE-ID: CVE-2026-53242)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper synchronization in snd_pcm_drain() when handling linked PCM streams during concurrent unlink operations. A local user can trigger concurrent drain and unlink activity to cause a denial of service.

The issue can corrupt wait queue lists and lead to a kernel panic through a NULL function pointer dereference during a subsequent wake-up.

149) Use-after-free (CVE-ID: CVE-2026-53239)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a use-after-free in xfrm_policy_bysel_ctx() and inexact bin handling in the xfrm policy subsystem when processing concurrent policy deletion and hash rebuild operations. A local user can trigger a race condition to cause a denial of service.

The issue occurs because an inexact bin may be freed during a window after the policy lock is released and before pruning is performed.

150) Out-of-bounds read (CVE-ID: CVE-2026-53238)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to an out-of-bounds read in netlbl_unlabel_addrinfo_get() when handling crafted Generic Netlink requests with a shorter unlabeled address mask attribute. A local user can send a specially crafted Generic Netlink request to cause a denial of service.

151) NULL pointer dereference (CVE-ID: CVE-2026-53237)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a NULL pointer dereference in the mvebu GPIO suspend/resume handling in drivers/gpio/gpio-mvebu.c when processing suspend and resume operations for GPIO banks without PWM functionality. A local user can trigger a suspend or resume operation to cause a denial of service.

Only GPIO banks that do not have PWM functionality are affected.

152) Improper access control (CVE-ID: CVE-2026-53236)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a local user to disclose sensitive information.

The vulnerability exists due to improper access control in SO_ATTACH_FILTER on TCP sockets when attaching a cBPF filter. A local user can attach a filter to leak TCP sequence and acknowledgment numbers to disclose sensitive information.

Exploitation requires access to create or control a TCP socket and use the socket option interface.

153) Improper control of a resource through its lifetime (CVE-ID: CVE-2026-53232)

CWE-ID: CWE-664 - Improper control of a resource through its lifetime

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper state management in the phy probing logic for the sfp upstream handling when probe failure paths are processed. A local user can trigger phy probing failure and subsequent SFP events to cause a denial of service.

The issue can leave a dangling upstream reference on the sfp-bus that may later be used during SFP events.

154) Out-of-bounds read (CVE-ID: CVE-2026-53230)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to an out-of-bounds read in mlx5_query_nic_vport_mac_list when querying a VF vport MAC list with a larger configured maximum than the PF capability-based buffer size. A local user can configure or trigger processing of a VF vport with a larger MAC list to cause a denial of service.

The issue occurs in the mlx5 driver while handling vport address list updates.

155) Improper resource shutdown or release (CVE-ID: CVE-2026-53229)

CWE-ID: CWE-404 - Improper Resource Shutdown or Release

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper resource shutdown or release in mlx5e_xmit_xdp_buff() in the mlx5 XDP transmit path when handling XDP_TX transmission failures in the XSK branch. A local user can trigger an XDP_TX transmit failure to cause a denial of service.

The issue occurs when sq->xmit_xdp_frame() returns false, such as when the XDPSQ is full, leaving DMA mappings and xdp_frame objects unreleased.

156) NULL pointer dereference (CVE-ID: CVE-2026-53227)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to an invalid pointer dereference in the openvswitch datapath flow command handler when handling crafted flow set operations after a reply skb allocation failure. A local user can trigger the error-handling path to cause a denial of service.

157) Out-of-bounds read (CVE-ID: CVE-2026-53223)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 6.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N]

The vulnerability allows a local user to disclose sensitive information.

The vulnerability exists due to an out-of-bounds read in the generic timestamp cmsg path in net/socket.c when processing timestamped messages for AF_PACKET sockets. A local user can send or receive crafted packets on an AF_PACKET socket to disclose sensitive information.

Exploitation requires timestamping to be enabled, and information disclosure can occur when SO_RXQ_OVFL is enabled and a non-linear skb is processed.

158) NULL pointer dereference (CVE-ID: CVE-2026-53220)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a NULL pointer dereference in ebt_redirect_tg() in net/bridge/netfilter/ebt_redirect.c when reinjecting an NFQUEUE packet after bridge port state changes. A local user can remove or reassign the bridge port before reinjection to cause a denial of service.

The issue occurs if the bridge port is removed between the original hook invocation and NFQUEUE reinjection, and the device may also be moved to a different virtual device such as macvlan.

159) Information disclosure (CVE-ID: CVE-2026-53219)

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a local user to disclose sensitive information.

The vulnerability exists due to improper handling of partially failed copy_to_user operations in x_tables get-entries implementations when copying rule entries to userspace. A local user can provide a userspace buffer that faults during the initial header copy to disclose sensitive information.

On SMP kernels, the leaked value is the internal percpu counter allocation pointer. The issue affects the IPv4, IPv6, and ARP native and compat get-entries paths.

160) Use of uninitialized resource (CVE-ID: CVE-2026-53218)

CWE-ID: CWE-908 - Use of Uninitialized Resource

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a local user to disclose sensitive information.

The vulnerability exists due to an uninitialized memory exposure in nft_exthdr_init and the nft_exthdr evaluation paths when processing a userspace request with the NFT_EXTHDR_F_PRESENT flag set and an invalid length value. A local user can supply a crafted netfilter expression that causes uninitialized stack data from nft_regs to be retained in registers and disclose sensitive information.

The issue occurs because the initialized register bitmap can mark more bytes as written than the evaluation paths actually store when the presence flag is used.

161) Out-of-bounds read (CVE-ID: CVE-2026-53217)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a local attacker to disclose sensitive information.

The vulnerability exists due to improper memory synchronization in mvpp2_rx() in the mvpp2 network driver when processing received packets on non-coherent DMA systems. A local attacker can send network traffic that triggers reception of a crafted frame to disclose sensitive information.

Only non-coherent DMA systems are affected.

162) NULL pointer dereference (CVE-ID: CVE-2026-53214)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a null pointer dereference in cleanup_prefix_route() when handling netlink requests to delete IPv6 addresses. A local user can send a crafted netlink message to trigger the null pointer dereference and cause a denial of service.

The issue occurs when addrconf_get_prefix_route() returns the fib6_null_entry sentinel with a NULL fib6_table pointer.

163) Memory leak (CVE-ID: CVE-2026-53213)

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper handling of memory allocation failure in vc4 shader validation when processing crafted shader data. A local user can trigger a failed memory reallocation to cause a denial of service.

164) Memory leak (CVE-ID: CVE-2026-53210)

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a memory leak in register_shm_helper() in the tee shared memory registration handler when processing a TEE_IOC_SHM_REGISTER request with a zero length. A local user can send a crafted ioctl request to cause a denial of service.

The issue is triggered when struct tee_ioctl_shm_register_data specifies a length of 0.

165) Stack-based buffer overflow (CVE-ID: CVE-2026-53209)

CWE-ID: CWE-121 - Stack-based buffer overflow

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a stack-based buffer overflow in hci_adv_bcast_annoucement() when rebuilding Bluetooth advertising data with a prepended Broadcast Announcement. A local user can trigger handling of an oversized advertising payload to cause a denial of service.

The issue occurs when an existing advertising instance already contains the maximum extended advertising payload.

166) Improper input validation (CVE-ID: CVE-2026-53208)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 5.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to improper input validation in l2cap_sig_channel() when processing oversized Bluetooth BR/EDR signaling packets. A remote attacker can send a specially crafted fixed-channel CID 0x0001 packet containing many L2CAP_ECHO_REQ commands to cause a denial of service.

Exploitation is possible by a Bluetooth BR/EDR peer within radio range before pairing.

167) Out-of-bounds read (CVE-ID: CVE-2026-53205)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to an out-of-bounds read in the firmware log buffer handling in drivers/accel/ivpu/ivpu_fw_log.c when processing firmware-supplied log indices. A local user can supply invalid read or write indices to trigger out-of-bounds buffer access and cause a denial of service.

Exploitation requires firmware to provide invalid log buffer index values.

168) Stack-based buffer overflow (CVE-ID: CVE-2026-53202)

CWE-ID: CWE-121 - Stack-based buffer overflow

CVSSv4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to execute arbitrary code.

The vulnerability exists due to a stack-based buffer overflow in the ivpu_ipc_receive function when processing firmware-supplied IPC message data. A local user can supply a crafted data_size value to trigger an oversized memcpy operation and execute arbitrary code.

Exploitation requires control over firmware-supplied message data.

169) Memory corruption (CVE-ID: CVE-2026-53199)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper memory access in netvsc_copy_to_send_buf() when copying skb fragments into the VMBus send buffer. A local user can trigger packet transmission with page-backed fragments to cause a denial of service.

The issue occurs on 32-bit x86 systems with CONFIG_HIGHMEM enabled when fragment pages reside above the LOWMEM boundary, and the fault happens on the transmit softirq path.

170) Use-after-free (CVE-ID: CVE-2026-53198)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote user to cause a denial of service.

The vulnerability exists due to a use-after-free in smb2_cancel in ksmbd when handling a second SMB2_CANCEL for the same AsyncId after cancellation of a deferred byte-range lock. A remote user can send specially crafted SMB2_CANCEL requests to cause a denial of service.

Exploitation requires authentication to the SMB service and involves a deferred SMB2_LOCK request that blocks.

171) Heap-based buffer overflow (CVE-ID: CVE-2026-53196)

CWE-ID: CWE-122 - Heap-based Buffer Overflow

CVSSv4: 5.1 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows an attacker with physical access to cause a denial of service or execute arbitrary code.

The vulnerability exists due to a heap-based buffer overflow in get_manuf_info() in the io_ti USB serial driver when processing a crafted USB device EEPROM descriptor. An attacker with physical access can connect a malicious USB device with a forged Size field to trigger the overflow and cause a denial of service or execute arbitrary code.

The out-of-bounds access is compounded because a checksum routine also iterates over the device-controlled length after the EEPROM data is read.

172) Heap-based buffer overflow (CVE-ID: CVE-2026-53195)

CWE-ID: CWE-122 - Heap-based Buffer Overflow

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a heap-based buffer overflow in build_i2c_fw_hdr() in the io_ti USB serial driver when parsing a crafted firmware file. A local user can supply a firmware image with an oversized Length field to cause a denial of service.

The issue arises because the Length field from the firmware image is not validated against the available destination buffer space before copying.

173) Out-of-bounds write (CVE-ID: CVE-2026-53194)

CWE-ID: CWE-787 - Out-of-bounds write

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to an out-of-bounds write in klsi_105_prepare_write_buffer() when processing writes to the tty device. A local user can write bulk_out_size or more bytes to the tty to cause a denial of service.

The issue is triggered when the write fifo holds at least the full bulk-out buffer size, causing data to be copied starting two bytes into a 64-byte buffer.

174) Missing Release of Resource after Effective Lifetime (CVE-ID: CVE-2026-53190)

CWE-ID: CWE-772 - Missing Release of Resource after Effective Lifetime

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a reference count leak in virtio_gpu_dma_fence_wait() when handling fence wait errors inside dma_fence_unwrap_for_each(). A local user can trigger an error during fence waiting to cause a denial of service.

175) Use-after-free (CVE-ID: CVE-2026-53185)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to use-after-free in zram_bvec_write_partial() when processing partial writes for ZRAM_WB slots. A local user can trigger an asynchronous backing device read and subsequent access to a freed page to cause a denial of service.

The issue occurs because the read operation may still be in flight when the buffer page is freed.

176) Type Confusion (CVE-ID: CVE-2026-53184)

CWE-ID: CWE-843 - Type confusion

CVSSv4: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to a type confusion in udp_read_skb() when processing UDP packets for a socket in a sockmap with an attached SK_SKB verdict program that performs a socket lookup. A remote attacker can send a specially crafted packet to cause a denial of service.

Exploitation requires a UDP socket to be in a sockmap and the attached verdict program to call a socket-lookup helper.

177) Resource exhaustion (CVE-ID: CVE-2026-53183)

CWE-ID: CWE-400 - Resource exhaustion

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to improper resource management in MPTCP DSS option handling in net/mptcp/options.c when processing incoming MPTCP traffic with out-of-order data in the MPTCP sequence space or data landing in the backlog. A remote attacker can send traffic that triggers artificial inflation of the MPTCP receive window to cause a denial of service.

The issue can allow incoming traffic to exceed the receiver rcvbuf size even when the sender is not misbehaving.

178) Improper input validation (CVE-ID: CVE-2026-53182)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper input validation in nl80211_parse_rnr_elems() when parsing nested NL80211_ATTR_EMA_RNR_ELEMS input. A local user can send a specially crafted nl80211 message to cause a denial of service.

The issue is related to the element count being stored in a u8-backed cfg80211_rnr_elems::cnt field and incremented past its supported limit.

179) Improper control of a resource through its lifetime (CVE-ID: CVE-2026-53181)

CWE-ID: CWE-664 - Improper control of a resource through its lifetime

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to improper state management in vmci_transport_recv_listen() when handling failed connection handshakes. A remote attacker can send malformed packets that trigger repeated handshake failures to cause a denial of service.

The issue can permanently prevent the listener from accepting new connections until the affected process is restarted.

180) NULL pointer dereference (CVE-ID: CVE-2026-53177)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a NULL pointer dereference in the bnxt_io_error_detected error recovery path when handling PCIe error recovery on a closed NIC. A local user can trigger PCIe error recovery for a device whose bnapi state is not allocated to cause a denial of service.

The issue occurs because error recovery services may run on subordinate devices regardless of administrative state.

181) Improper access control (CVE-ID: CVE-2026-53168)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote user to cause a denial of service.

The vulnerability exists due to improper access control in fuse_notify_store() and fuse_notify_retrieve() when processing FUSE pagecache notification operations on directories. A remote user can issue crafted FUSE_NOTIFY_STORE or FUSE_NOTIFY_RETRIEVE operations on a directory inode to cause a denial of service.

The issue affects directory inodes that use kernel-internal pagecache storage.

182) Use-after-free (CVE-ID: CVE-2026-53161)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a use-after-free in the fastrpc workqueue cleanup path when processing DSP responses during file descriptor release. A local user can trigger a race by closing the file descriptor while an in-flight DSP invocation completes to cause a denial of service.

The issue occurs because context cleanup may run in parallel with device release after the user structure has already been freed.

183) Use-after-free (CVE-ID: CVE-2026-53160)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a use-after-free condition.

The vulnerability exists due to a use-after-free race in fastrpc_map_create in drivers/misc/fastrpc.c when handling concurrent MEM_UNMAP operations during map lookup and reference acquisition. A local user can trigger concurrent map operations to cause a use-after-free condition.

The issue occurs because a raw pointer is returned after releasing fl->lock and is later referenced without atomic reference acquisition under the lock.

184) Integer underflow (CVE-ID: CVE-2026-53159)

CWE-ID: CWE-191 - Integer underflow

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a local user to corrupt a DMA address.

The vulnerability exists due to an integer underflow in fastrpc_get_args() when processing a user-provided pointer that falls in a gap before a returned VMA. A local user can supply a crafted pointer value to corrupt a DMA address.

The corrupted DMA address is sent to the DSP.

185) NULL pointer dereference (CVE-ID: CVE-2026-53158)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local attacker to cause a denial of service.

The vulnerability exists due to a NULL pointer dereference in fastrpc_rpmsg_callback() when handling a glink message before probe initialization has completed. A local attacker can trigger the callback during early channel activation to cause a denial of service.

This issue can occur during boot when the rpmsg channel becomes live before driver initialization is fully complete.

186) Use-after-free (CVE-ID: CVE-2026-53156)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to use-after-free in drivers/nvmem/core.c when handling error paths and device reference release. A local user can trigger a code path that releases an nvmem device reference and then continues using the freed structure to cause a denial of service.

187) Improper control of a resource through its lifetime (CVE-ID: CVE-2026-53154)

CWE-ID: CWE-664 - Improper control of a resource through its lifetime

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper state management in mm/hugetlb.c hugetlb folio copy paths when handling failed hugetlb folio copy operations. A local user can trigger a failed UFFDIO_COPY operation or a fork-time copy-on-write path failure to cause a denial of service.

The issue can leak a reservation from a private hugetlb VMA reserve map, which may cause a later fault at the same address to take the no-reservation path and receive SIGBUS under hugetlb pool pressure.

188) Out-of-bounds write (CVE-ID: CVE-2026-53150)

CWE-ID: CWE-787 - Out-of-bounds write

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local attacker to cause a denial of service.

The vulnerability exists due to an out-of-bounds write in tb_property_entry_valid() and the TEXT property null-termination logic in drivers/thunderbolt/property.c when parsing XDomain property entries. A local attacker can provide a crafted zero-length TEXT property entry to cause a denial of service.

189) Out-of-bounds read (CVE-ID: CVE-2026-53149)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to an out-of-bounds read in __tb_property_parse_dir() in the thunderbolt property parser when parsing a crafted root directory property block. A local user can supply a crafted property block to cause a denial of service.

190) Out-of-bounds write (CVE-ID: CVE-2026-53148)

CWE-ID: CWE-787 - Out-of-bounds write

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to cause memory corruption.

The vulnerability exists due to an out-of-bounds write in tb_xdp_properties_request() in the thunderbolt xdomain handler when processing a crafted XDomain response from a malicious peer. A remote attacker can send a response with a forged length field to cause memory corruption.

191) Out-of-bounds read (CVE-ID: CVE-2026-53147)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to disclose sensitive information.

The vulnerability exists due to an out-of-bounds read in tb_xdp_handle_request() in the thunderbolt xdomain request handler when processing a crafted XDomain request packet that is shorter than the expected protocol-specific structure. A remote attacker can send a minimal crafted XDomain packet to disclose sensitive information.

A generic header length check can be passed even when the packet is too short for the protocol-specific structure accessed after the type cast.

192) Out-of-bounds read (CVE-ID: CVE-2026-53146)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a local user to disclose sensitive information.

The vulnerability exists due to an out-of-bounds read in tb_xdomain_copy() in the thunderbolt xdomain component when processing a short response frame. A local user can send a specially crafted short response to disclose sensitive information.

193) NULL pointer dereference (CVE-ID: CVE-2026-53144)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a NULL pointer dereference in get_queue_ids() and its callers in the amdkfd debug trap queue handling path when processing a debug trap ioctl request with num_queues greater than zero and a missing queue array pointer. A local user can supply crafted ioctl parameters to trigger a kernel panic and cause a denial of service.

The issue is triggered via kfd_ioctl_set_debug_trap().

194) Heap-based buffer overflow (CVE-ID: CVE-2026-53143)

CWE-ID: CWE-122 - Heap-based Buffer Overflow

CVSSv4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N]

The vulnerability allows a local user to disclose sensitive information and corrupt memory.

The vulnerability exists due to a heap-based buffer overflow in the amdkfd v11 MQD manager SDMA queue checkpoint and restore handlers when processing CRIU checkpoint and restore operations for SDMA queues on GFX11. A local user can trigger checkpoint or restore of an SDMA queue to disclose sensitive information and corrupt memory.

The issue is specific to v11 SDMA queues on Navi3x during CRIU checkpoint and restore.

195) Improper resource shutdown or release (CVE-ID: CVE-2026-53140)

CWE-ID: CWE-404 - Improper Resource Shutdown or Release

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper resource shutdown or release in v3d_rewrite_csd_job_wg_counts_from_indirect() when processing indirect CSD workgroup buffers with zeroed workgroup counts. A local user can trigger an early return path to cause a denial of service.

196) Out-of-bounds read (CVE-ID: CVE-2026-53138)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 5.2 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows an attacker with physical access to cause a denial of service or disclose sensitive information.

The vulnerability exists due to an out-of-bounds read and unbounded iteration in amd display bios_parser.c and bios_parser2.c record-chain walk loops when parsing a malformed VBIOS image during probe time. An attacker with physical access can provide a crafted VBIOS image missing the terminator record to cause a denial of service or disclose sensitive information.

The issue is triggered when the VBIOS record chain lacks the 0xFF terminator record or uses a zero-sized termination condition incorrectly.

197) Out-of-bounds write (CVE-ID: CVE-2026-53137)

CWE-ID: CWE-787 - Out-of-bounds write

CVSSv4: 5.1 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows an attacker with physical access to cause a denial of service.

The vulnerability exists due to an out-of-bounds write in mod_hdcp_read_rx_id_list() when processing a malicious HDMI HDCP 2.x repeater ReceiverID list over I2C. An attacker with physical access can provide a malicious HDMI repeater that advertises an oversized message length to cause a denial of service.

The issue occurs during HDCP 2.x repeater authentication over HDMI.

198) Heap-based buffer overflow (CVE-ID: CVE-2026-53136)

CWE-ID: CWE-122 - Heap-based Buffer Overflow

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service or execute arbitrary code.

The vulnerability exists due to a heap-based buffer overflow in get_integrated_info_v11() and get_integrated_info_v2_1() in the AMD display BIOS parser when parsing a malformed VBIOS during driver probe. A local user can provide a specially crafted VBIOS with oversized HDMI retimer register counts to cause a denial of service or execute arbitrary code.

Exploitation requires control over the VBIOS data consumed by the driver.

199) Out-of-bounds read (CVE-ID: CVE-2026-53135)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a local user to disclose sensitive information.

The vulnerability exists due to an out-of-bounds read in dp_sdp_message_debugfs_write() in the AMD display debugfs interface when handling writes to the sdp_message debugfs node with a user-supplied buffer smaller than 36 bytes. A local user can provide a short user buffer to disclose sensitive information.

200) NULL pointer dereference (CVE-ID: CVE-2026-53135)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a NULL pointer dereference in dp_sdp_message_debugfs_write() in the AMD display debugfs interface when handling writes to the sdp_message debugfs node. A local user can write to the debugfs node to cause a denial of service.

A connector may be connected but not bound to any CRTC, such as after hot-plug before the next atomic commit.

201) Use of Uninitialized Variable (CVE-ID: CVE-2026-53134)

CWE-ID: CWE-457 - Use of Uninitialized Variable

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a local user to disclose sensitive information.

The vulnerability exists due to uninitialized memory exposure in the nft_fib IPv4/IPv6 evaluation logic when processing nftables fib expressions that use the OIFNAME result or an invalid NFTA_FIB_F_PRESENT combination. A local user can configure and trigger a crafted fib expression to disclose sensitive information.

The issue occurs because only part of the declared destination register span is written on certain evaluation paths, leaving stale kernel stack data available to a downstream expression that reads the full register span.

202) Integer overflow (CVE-ID: CVE-2026-53133)

CWE-ID: CWE-190 - Integer overflow

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to integer overflow in __rdma_block_iter_next() in the RDMA umem block iterator when reassembling split scatter-gather entries during IOMMU-backed mapping linearization. A local user can trigger processing of a very large mapped block to cause a denial of service.

The issue occurs for block sizes greater than or equal to 4G when a single large block is split across multiple scatter-gather entries.

203) Allocation of Resources Without Limits or Throttling (CVE-ID: CVE-2026-53132)

CWE-ID: CWE-770 - Allocation of Resources Without Limits or Throttling

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper resource management in virtio_transport_inc_rx_pkt() and the virtio vsock receive queue when processing crafted packets with zero-length payloads and the VIRTIO_VSOCK_SEQ_EOM flag. A local user can send a large number of specially crafted packets to cause a denial of service.

The issue occurs because queued packets may not increase the tracked byte count, allowing the receive queue to grow excessively.

204) NULL pointer dereference (CVE-ID: CVE-2026-53080)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a NULL pointer dereference in the cls_fw classifier when classifying packets with an invalid old-style filter on a shared block. A local user can send crafted traffic while creating such a filter to cause a denial of service.

Exploitation requires the ability to configure traffic control filters and trigger packet classification.

205) Integer overflow (CVE-ID: CVE-2026-52948)

CWE-ID: CWE-190 - Integer overflow

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to integer overflow in the I2C_TIMEOUT ioctl handler in i2c-dev when processing a user-supplied timeout value. A local user can supply a large timeout value to cause a denial of service.

The issue can corrupt the SMBus controller state machine and leave it in an unrecoverable state.

206) Use-after-free (CVE-ID: CVE-2026-52947)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a use-after-free in qrtr_port_remove in the qrtr socket subsystem when handling concurrent qrtr port removal and lookup operations under RCU. A local user can trigger the race condition to cause a denial of service.

The issue arises because a socket pointer can remain reachable through the qrtr_ports XArray before the RCU grace period elapses.

207) Improper access control (CVE-ID: CVE-2026-52944)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a remote user to bypass permission checks and modify file sparse attributes.

The vulnerability exists due to improper access control in fsctl_set_sparse() when handling FSCTL_SET_SPARSE requests. A remote user can send a crafted FSCTL_SET_SPARSE request on an opened file to bypass permission checks and modify file sparse attributes.

The issue affects both clients on read-only shares and clients on writable shares that lack FILE_WRITE_DATA or FILE_WRITE_ATTRIBUTES access.

208) Use-after-free (CVE-ID: CVE-2026-52943)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to escalate privileges.

The vulnerability exists due to a use-after-free in pskb_carve_inside_header() and pskb_carve_inside_nonlinear() when copying skb_shared_info for MSG_ZEROCOPY skbs. A local user can trigger repeated zerocopy skb operations to escalate privileges.

The issue is caused by copying the destructor_arg pointer into a new skb_shared_info without incrementing the associated zerocopy reference count, which can prematurely free ubuf_info_msgzc while transmit skbs still hold live references.

209) Out-of-bounds read (CVE-ID: CVE-2026-52942)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a local user to disclose sensitive information.

The vulnerability exists due to an out-of-bounds read in dump_mac_header() in the netfilter nf_log syslog logger when processing an skb sent through AF_PACKET with PACKET_QDISC_BYPASS and an unset MAC header. A local user can send a specially crafted packet to disclose sensitive information.

Only skbs with an unset MAC header are affected.

210) NULL pointer dereference (CVE-ID: CVE-2026-52939)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a NULL pointer dereference in rds_ib_send_cqe_handler() and rds_ib_send_unmap_op() when processing an atomic cmsg over an active RDS/IB connection. A local user can send a crafted AF_RDS sendmsg() request to cause a denial of service.

On hardware that natively accepts masked atomic operations, no additional setup is required.

211) Out-of-bounds read (CVE-ID: CVE-2026-52935)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a local user to disclose sensitive information.

The vulnerability exists due to an out-of-bounds read in espintcp_sendmsg() when handling a new send while a previous partial send is still in progress. A local user can trigger a partial send and initiate another send to disclose sensitive information.

The issue occurs in the send path because a stale offset from a live partial-send state can remain attached to a new sk_msg.

212) Integer overflow (CVE-ID: CVE-2026-52934)

CWE-ID: CWE-190 - Integer overflow

CVSSv4: 6.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to corrupt kernel memory.

The vulnerability exists due to an integer overflow leading to an out-of-bounds write in batadv_tvlv_container_ogm_append() and batadv_tvlv_container_list_size() when processing registered TVLV containers. A local user can cause the accumulated TVLV size to exceed U16_MAX and trigger an undersized allocation to corrupt kernel memory.

213) Race condition (CVE-ID: CVE-2026-52930)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a race condition in shared memory orphan cleanup in ipc/shm.c when cleaning up orphaned shared memory segments while attachment counts are updated concurrently. A local user can trigger concurrent shared memory attach and cleanup operations to cause a denial of service.

The issue occurs because shm_destroy_orphaned() may decide that an orphaned segment is unused before taking the object lock.

214) NULL pointer dereference (CVE-ID: CVE-2026-52929)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to a null-pointer dereference in the SCTP stream scheduler state handling in net/sctp/stream.c when processing a denied ADD_OUT_STREAMS operation and a later stream re-add. A remote attacker can trigger SCTP stream reset operations that leave stale removed stream metadata behind to cause a denial of service.

The issue occurs because removed outgoing stream state is not fully rolled back, leaving scheduler-private stream metadata inconsistent for later reuse.

215) Out-of-bounds read (CVE-ID: CVE-2026-52927)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a local user to disclose sensitive information.

The vulnerability exists due to an out-of-bounds read in compat_mtw_from_user in the ebtables netfilter subsystem when converting 32-bit user-supplied extension structures to native kernel structures. A local user can provide a crafted match or target size smaller than the extension requires to disclose sensitive information.

The issue affects extensions that rely on compat_from_user callbacks, which assume they can read the required compat size.

216) Use-after-free (CVE-ID: CVE-2026-52923)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a use-after-free in ipc_idr_alloc() in the checkpoint/restore SysV IPC allocation path when processing a request for the next SysV IPC id. A local user can request allocation beyond the valid IPC id range to cause a denial of service.

A subsequent walk of /proc/sysvipc/shm can dereference freed memory through a stale IDR entry.

217) Out-of-bounds read (CVE-ID: CVE-2026-52917)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a local user to disclose sensitive information.

The vulnerability exists due to an out-of-bounds read in the SCTP sock_diag dump-one path when processing an exact association lookup after taking the socket lock on a stale association. A local user can trigger a stale association lookup to disclose sensitive information.

The issue occurs when association state is reaped or detached from the endpoint while the lookup path resumes after blocking on the socket lock.

218) NULL pointer dereference (CVE-ID: CVE-2026-52913)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a NULL pointer dereference in the batman-adv OGMv2 handling code when processing OGM dispatch on an interface that has been disabled and lost its mesh interface association. A local user can trigger OGM processing on such an interface to cause a denial of service.

The issue occurs because an interface may be disabled after OGM processing begins, leaving its mesh interface pointer set to NULL while the code still attempts to use it.

219) Out-of-bounds read (CVE-ID: CVE-2026-52910)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to an out-of-bounds read in the reuseport cBPF program handling in sk_reuseport_prog_free() when detaching or replacing a reuseport program while UDP packets are being processed concurrently. A local user can trigger concurrent reuseport program updates and packet transmission to cause a denial of service.

The issue occurs because the classic BPF reuseport program may be freed before RCU readers have completed.

220) Improper access control (CVE-ID: CVE-2026-52908)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a local user to gain write access to memory regions that were not properly pinned as writable.

The vulnerability exists due to improper access control in RDMA memory region re-registration handling when changing IB_MR_REREG_ACCESS from read-only to read-write. A local user can re-register a memory region with writable access to gain write access to memory regions that were not properly pinned as writable.

The issue occurs when a driver reuses an existing umem during memory region re-registration.

221) Memory leak (CVE-ID: CVE-2026-46322)

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a memory leak in tun_xdp_one() when handling a build_skb() allocation failure. A local user can trigger this error path to cause a denial of service.

The issue occurs because a page allocated for the frame is not freed on the failure path, and the per-buffer error may be discarded during batch processing.

222) Memory leak (CVE-ID: CVE-2026-46321)

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a memory leak in tun_xdp_one() in the tun driver when processing short frames through the tun and vhost-net transmit path. A local user can submit TX descriptors whose payload length is shorter than ETH_HLEN to exhaust host memory and trigger an OOM panic.

Exploitation requires the ability to open /dev/net/tun and /dev/vhost-net and to attach a tun/tap device as the vhost-net backend.

223) Improper resource shutdown or release (CVE-ID: CVE-2026-46320)

CWE-ID: CWE-404 - Improper Resource Shutdown or Release

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper resource shutdown or release in tap_get_user_xdp() when processing XDP frames. A local user can send a crafted short frame or trigger skb allocation failure to cause a denial of service.

Each rejected frame in a batch leaks one page-frag chunk.

224) Exposure of Resource to Wrong Sphere (CVE-ID: CVE-2026-46203)

CWE-ID: CWE-668 - Exposure of resource to wrong sphere

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper access to hardware registers in cadence-quadspi driver unbind handling when unbinding the driver while the controller is runtime suspended. A local user can trigger driver unbind to cause a denial of service.

225) Improper Initialization (CVE-ID: CVE-2026-45930)

CWE-ID: CWE-665 - Improper Initialization

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a local user to disclose sensitive information.

The vulnerability exists due to improper initialization in netlink ndmsg response messages when handling RTM_GETNEIGH requests. A local user can send a crafted netlink request to disclose sensitive information.

The issue affects pad bytes in the ndmsg data returned by the kernel.

226) Improper input validation (CVE-ID: CVE-2026-45850)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to improper input validation in ipvs checksum validation when processing IPv6 packets with extension headers. A remote attacker can send specially crafted IPv6 packets to cause a denial of service.

227) Always-Incorrect Control Flow Implementation (CVE-ID: CVE-2026-43331)

CWE-ID: CWE-670 - Always-Incorrect Control Flow Implementation

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper handling of kcOV instrumentation state in machine kexec code when executing kexec on a KCOV-instrumented kernel. A local user can trigger a kexec operation to cause a denial of service.

Exploitation requires CONFIG_KEXEC and CONFIG_KCOV to be enabled simultaneously, and the issue is not relevant to 32-bit kernels.

228) Always-Incorrect Control Flow Implementation (CVE-ID: CVE-2026-43311)

CWE-ID: CWE-670 - Always-Incorrect Control Flow Implementation

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper execution context handling in the Tegra PMC resume handler when resuming from system suspend. A local user can trigger a suspend and resume cycle to cause a kernel warning and destabilize the system.

The issue is observed on Tegra platforms during wake handling after system suspend.

229) Use-after-free (CVE-ID: CVE-2026-43303)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to use-after-free in the swap subsystem when handling stale page->private values on reallocated and split pages. A local user can trigger swapoff operations after causing affected page state reuse to cause a denial of service.

The issue occurs because tail pages can retain stale page->private values after split_page(), leading swap_count_continued() to follow an invalid continuation list and access poisoned list entries.

230) Improper input validation (CVE-ID: CVE-2026-43240)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper input validation in the ima_restore_measurement_list function when booting a second-stage kernel via kexec with a limiting command line such as "mem=". A local user can boot the second-stage kernel with a crafted limiting command line to cause a denial of service.

The issue occurs when the physical range containing the carried-over IMA measurement list falls outside truncated RAM, leading to a kernel panic.

231) Improper control of a resource through its lifetime (CVE-ID: CVE-2026-43219)

CWE-ID: CWE-664 - Improper control of a resource through its lifetime

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper state management in cpsw_unregister_ports() when handling a failed register_netdev() call for the first MAC in cpsw_register_ports(). A local user can trigger an error during network device registration to cause a denial of service.

232) Use-after-free (CVE-ID: CVE-2026-43116)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a use-after-free in netfilter ctnetlink expectation handling when processing expectation add, delete, get, or event operations. A local user can trigger access to an invalid master conntrack object to cause a denial of service.

233) Use-after-free (CVE-ID: CVE-2026-31663)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a use-after-free in xfrm_input_resume and transport_finish when processing packets after asynchronous crypto completion. A local user can trigger a race with device teardown to cause a denial of service.

234) Out-of-bounds read (CVE-ID: CVE-2026-23346)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper input validation in the ioremap_prot() function when handling memory protection settings from user mappings. A local user can trigger access to a specially crafted user memory region to cause a kernel memory access violation, leading to a system crash.

The issue specifically affects arm64 systems where user page protection flags are incorrectly processed during physical memory access, resulting in an unreadable memory access from kernel space.

235) Improper locking (CVE-ID: CVE-2025-68768)

CWE-ID: CWE-667 - Improper Locking

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper locking within the ip_expire() function in net/ipv4/ip_fragment.c. A local user can perform a denial of service (DoS) attack.

236) Out-of-bounds read (CVE-ID: CVE-2025-68296)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to an out-of-bounds read error within the fbcon_fb_unregistered() and do_fb_registered() functions in drivers/video/fbdev/core/fbcon.c. A local user can perform a denial of service (DoS) attack.

Remediation

Install update from vendor's website.

References

• https://ubuntu.com/security/notices/USN-8904-1