SB2026072511 - openEuler 22.03 LTS SP4 update for kernel
Published: July 25, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 18 vulnerabilities.
1) Out-of-bounds read (CVE-ID: CVE-2026-46303)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to an out-of-bounds read in rock_continue() in the isofs Rock Ridge continuation entry parser when parsing a crafted ISO image during mount. A remote attacker can supply a crafted ISO image with a malformed CE continuation extent to disclose sensitive information.
User interaction may be required through desktop optical auto-mount, or exploitation may require mounting the crafted ISO with administrative mount capability.
2) Out-of-bounds write (CVE-ID: CVE-2026-53176)
CWE-ID: CWE-787 - Out-of-bounds write
CVSSv4: 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/E:U/U:Green
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to an out-of-bounds write in isert_login_recv_done() and isert_rx_login_req() in drivers/infiniband/ulp/isert/ib_isert.c when processing a login PDU shorter than ISER_HEADERS_LEN. A remote attacker can send a specially crafted login send work request to cause a denial of service.
The vulnerable code path is reachable during the login phase before iSCSI authentication.
3) NULL pointer dereference (CVE-ID: CVE-2026-53135)
CWE-ID: CWE-476 - NULL Pointer Dereference
CVSSv4: 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/E:U/U:Clear
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.
4) Out-of-bounds read (CVE-ID: CVE-2026-53135)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 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/E:U/U:Clear
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.
5) Out-of-bounds read (CVE-ID: CVE-2026-53040)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 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/E:U/U:Clear
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to an out-of-bounds read in the ocfs2 freefrag scan logic in fs/ocfs2/ioctl.c when processing a crafted filesystem through OCFS2_IOC_INFO with OCFS2_INFO_FL_NON_COHERENT. A local user can supply a crafted filesystem and issue the ioctl request to cause a denial of service.
The issue occurs in the non-coherent scan path, which reads raw group descriptor blocks without the validation performed by the coherent path.
6) Off-by-one (CVE-ID: CVE-2026-53036)
CWE-ID: CWE-193 - Off-by-one Error
CVSSv4: 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/E:U/U:Clear
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to an off-by-one error in the arm64 BPF JIT immediate range check in check_imm() when validating branch displacement values for encoded BPF branch instructions. A local user can supply a crafted branch displacement value to cause a denial of service.
The issue can flip a forward branch into a backward one because the raw value is masked into the signed immediate field.
7) Double free (CVE-ID: CVE-2026-53009)
CWE-ID: CWE-415 - Double Free
CVSSv4: 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/E:U/U:Clear
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a double free in ice_xmit_frame_ring() and tx ring buffer cleanup when handling transmit error paths and interface shutdown. A local user can trigger transmit checksum or tso failure conditions and then bring the interface down to cause a denial of service.
The issue occurs because a tx_buf entry can remain marked as valid and continue to reference an skb that was already freed in the error path.
8) Out-of-bounds write (CVE-ID: CVE-2026-53004)
CWE-ID: CWE-787 - Out-of-bounds write
CVSSv4: 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/E:U/U:Clear
The vulnerability allows a local user to corrupt adjacent userspace data.
The vulnerability exists due to an out-of-bounds write in sctp_getsockopt_peer_auth_chunks when processing a getsockopt request for peer AUTH chunks with an undersized optval buffer. A local user can supply a crafted buffer length to corrupt adjacent userspace data.
Exploitation requires an SCTP association with AUTH enabled, and the overwritten bytes land in the caller's own userspace buffer rather than in kernel memory.
9) Improper resource shutdown or release (CVE-ID: CVE-2026-52981)
CWE-ID: CWE-404 - Improper Resource Shutdown or Release
CVSSv4: 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/E:U/U:Clear
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper resource shutdown or release in neigh_xmit in the neighbour networking subsystem when handling packet transmission with an uninitialized neighbor table. A local user can trigger packet transmission in this state to cause a denial of service.
This can occur, for example, when the IPv6 neighbor table is uninitialized because IPv6 is disabled.
10) Use-after-free (CVE-ID: CVE-2025-38708)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 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/E:U/U:Clear
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the handle_write_conflicts() function in drivers/block/drbd/drbd_receiver.c. A local user can escalate privileges on the system.
11) Use of Uninitialized Variable (CVE-ID: CVE-2026-46169)
CWE-ID: CWE-457 - Use of Uninitialized Variable
CVSSv4: 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/E:U/U:Clear
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to uninitialized memory use in hfs_brec_read() and catalog record handling in the hfsplus filesystem code when mounting a corrupted filesystem. A local user can mount a specially crafted filesystem image to cause a denial of service.
12) Race condition (CVE-ID: CVE-2026-46137)
CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CVSSv4: 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/E:U/U:Clear
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a race condition in mptcp_pm_add_timer() when handling ADD_ADDR retransmission timer callbacks. A local user can trigger concurrent access to cause a denial of service.
13) Improper access control (CVE-ID: CVE-2026-45993)
CWE-ID: CWE-284 - Improper Access Control
CVSSv4: 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/E:U/U:Clear
The vulnerability allows a local user to disclose sensitive information.
The vulnerability exists due to improper access control in the LoongArch syscall dispatch table when processing user-controlled syscall numbers. A local user can supply a crafted syscall number to disclose sensitive information.
The syscall number is directly controlled from userspace.
14) NULL pointer dereference (CVE-ID: CVE-2026-45965)
CWE-ID: CWE-476 - NULL Pointer Dereference
CVSSv4: 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/E:U/U:Clear
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a NULL pointer dereference in rawdata_get_link_base in apparmorfs when resolving symbolic links to rawdata for a replaced profile after the export_binary parameter has been disabled at runtime. A local user can read a crafted rawdata symbolic link to cause a denial of service.
The issue occurs for profiles loaded before export_binary was disabled and then replaced, leaving the rawdata pointer NULL while the symbolic link remains accessible.
15) Use-after-free (CVE-ID: CVE-2026-45956)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 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/E:U/U:Clear
The vulnerability allows a local user to cause a denial of service or potentially execute arbitrary code.
The vulnerability exists due to use-after-free in vidi_connection_ioctl() when handling ioctl requests and looking up the vidi context from incorrect driver data. A local user can trigger the vulnerable ioctl path to cause a denial of service or potentially execute arbitrary code.
The issue stems from using the exynos-drm master device driver data instead of the vidi component device context.
16) Race condition (CVE-ID: CVE-2026-31642)
CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CVSSv4: 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/E:U/U:Clear
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper synchronization in rxrpc call removal from the rxnet->calls list when reading /proc/net/rxrpc/calls. A local user can trigger access to the procfs entry during concurrent call deletion to cause a denial of service.
17) Out-of-bounds read (CVE-ID: CVE-2026-23076)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 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/E:U/U:Clear
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 amixer_rsc_init() and sum_rsc_init() functions in sound/pci/ctxfi/ctamixer.c. A local user can perform a denial of service (DoS) attack.
18) Memory leak (CVE-ID: CVE-2025-39891)
CWE-ID: CWE-401 - Missing release of memory after effective lifetime
CVSSv4: 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/E:U/U:Clear
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the _mwifiex_fw_dpc() and mwifiex_uninit_sw() functions in drivers/net/wireless/marvell/mwifiex/main.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.