SB2025072864 - Ubuntu live patch for Linux kernel

Description

This security bulletin contains information about 6 vulnerabilities.

1) Buffer overflow (CVE-ID: CVE-2024-57850)

CWE-ID: CWE-119 - Memory corruption

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 memory corruption within the jffs2_rtime_decompress() function in fs/jffs2/compr_rtime.c. A local user can escalate privileges on the system.

2) Out-of-bounds read (CVE-ID: CVE-2024-56608)

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 dcn21_link_encoder_create() function in drivers/gpu/drm/amd/display/dc/resource/dcn21/dcn21_resource.c. A local user can perform a denial of service (DoS) attack.

3) Out-of-bounds read (CVE-ID: CVE-2024-56596)

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 jfs_readdir() function in fs/jfs/jfs_dtree.c. A local user can perform a denial of service (DoS) attack.

4) Use-after-free (CVE-ID: CVE-2024-56551)

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 amdgpu_vce_sw_fini() function in drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c, within the amdgpu_device_fini_sw() function in drivers/gpu/drm/amd/amdgpu/amdgpu_device.c. A local user can escalate privileges on the system.

5) Use-after-free (CVE-ID: CVE-2024-53171)

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 get_znodes_to_commit() function in fs/ubifs/tnc_commit.c. A local user can escalate privileges on the system.

6) Improper locking (CVE-ID: CVE-2024-50047)

CWE-ID: CWE-667 - Improper Locking

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 improper locking within the SMB2_negotiate() function in fs/smb/client/smb2pdu.c, within the smb2_get_enc_key(), crypt_message(), smb3_init_transform_rq() and decrypt_raw_data() functions in fs/smb/client/smb2ops.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/LSN-0113-1