SB20261111185 - Ubuntu update for linux, linux-aws, linux-kvm and more

Description

This security bulletin contains information about 19 vulnerabilities.

1) Input validation error (CVE-ID: CVE-2024-56570)

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 perform a denial of service (DoS) attack.

The vulnerability exists due to improper input validation within the ovl_dentry_init_flags() function in fs/overlayfs/util.c. A local user can perform a denial of service (DoS) attack.

2) Out-of-bounds read (CVE-ID: CVE-2026-74350)

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 ocfs2 fast symlink read path when processing a malformed zero-cluster symlink inode. A local user can provide a crafted filesystem image containing an invalid fast symlink to disclose sensitive information.

The issue is triggered when the inline symlink payload is not NUL-terminated at the recorded size or when the recorded size exceeds the inline fast-symlink capacity.

3) Type Confusion (CVE-ID: CVE-2026-43456)

CWE-ID: CWE-843 - Type confusion

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 type confusion in bond_setup_by_slave() when handling header operations for a bonded non-Ethernet slave device. A local user can enslave a non-Ethernet device such as a GRE tunnel to a bond and trigger packet transmission to cause a denial of service.

The issue is triggered because header callbacks from the slave device are invoked with the bond device context, causing device-specific private data to be interpreted as the wrong type.

4) Input validation error (CVE-ID: CVE-2025-39743)

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 perform a denial of service (DoS) attack.

The vulnerability exists due to improper input validation within the jfs_evict_inode() function in fs/jfs/inode.c. A local user can perform a denial of service (DoS) attack.

5) NULL pointer dereference (CVE-ID: CVE-2025-38604)

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 perform a denial of service (DoS) attack.

The vulnerability exists due to NULL pointer dereference within the rtl8187_stop() function in drivers/net/wireless/realtek/rtl818x/rtl8187/dev.c. A local user can perform a denial of service (DoS) attack.

6) Out-of-bounds read (CVE-ID: CVE-2025-21664)

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 get_first_thin() function in drivers/md/dm-thin.c. A local user can perform a denial of service (DoS) attack.

7) Resource management error (CVE-ID: CVE-2024-57904)

CWE-ID: CWE-399 - Resource Management Errors

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 resource management error within the at91_ts_register() function in drivers/iio/adc/at91_adc.c. A local user can perform a denial of service (DoS) attack.

8) Memory leak (CVE-ID: CVE-2024-56779)

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 perform a denial of service (DoS) attack.

The vulnerability exists due to memory leak within the release_open_stateid(), spin_lock() and nfsd4_process_open2() functions in fs/nfsd/nfs4state.c. A local user can perform a denial of service (DoS) attack.

9) Resource management error (CVE-ID: CVE-2024-56763)

CWE-ID: CWE-399 - Resource Management Errors

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 resource management error within the tracing_cpumask_write() function in kernel/trace/trace.c. A local user can perform a denial of service (DoS) attack.

10) Out-of-bounds read (CVE-ID: CVE-2024-56616)

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 drm_dp_decode_sideband_msg_hdr() function in drivers/gpu/drm/display/drm_dp_mst_topology.c. A local user can perform a denial of service (DoS) attack.

11) Out-of-bounds read (CVE-ID: CVE-2021-47633)

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 ath5k_eeprom_convert_pcal_info_5111() function in drivers/net/wireless/ath/ath5k/eeprom.c. A local user can perform a denial of service (DoS) attack.

12) Out-of-bounds read (CVE-ID: CVE-2024-53214)

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 vfio_virt_config_read() and vfio_config_do_rw() functions in drivers/vfio/pci/vfio_pci_config.c. A local user can perform a denial of service (DoS) attack.

13) Memory leak (CVE-ID: CVE-2024-53210)

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 perform a denial of service (DoS) attack.

The vulnerability exists due to memory leak within the iucv_sock_recvmsg() function in net/iucv/af_iucv.c. A local user can perform a denial of service (DoS) attack.

14) Use-after-free (CVE-ID: CVE-2024-53194)

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 on the system.

The vulnerability exists due to a use-after-free error within the pci_slot_release(), pci_bus_get() and make_slot_name() functions in drivers/pci/slot.c. A local user can escalate privileges on the system.

15) Improper error handling (CVE-ID: CVE-2023-52784)

CWE-ID: CWE-388 - Error Handling

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 error handling within the bond_setup_by_slave() function in drivers/net/bonding/bond_main.c. A local user can perform a denial of service (DoS) attack.

16) Out-of-bounds read (CVE-ID: CVE-2022-49170)

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 sanity_check_curseg() function in fs/f2fs/segment.c. A local user can perform a denial of service (DoS) attack.

17) Buffer overflow (CVE-ID: CVE-2022-49058)

CWE-ID: CWE-119 - Memory corruption

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 on the system.

The vulnerability exists due to memory corruption within the parse_mf_symlink() function in fs/cifs/link.c. A local user can escalate privileges on the system.

18) Race condition (CVE-ID: CVE-2022-23037)

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

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 bypass implemented security restrictions.

The vulnerability exists due to a race condition in the netfront ring buffer. A malicious backend can exploit the race condition and read or write data or perform a denial of service attack.

19) Race condition (CVE-ID: CVE-2022-23036)

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

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 bypass implemented security restrictions.

The vulnerability exists due to a race condition in the blkfront ring buffer. A malicious backend can exploit the race condition and read or write data or perform a denial of service attack.

Remediation

Install update from vendor's website.

References

• https://ubuntu.com/security/notices/USN-9033-1