SUSE update for the Linux Kernel (Live Patch 14 for SLE 15 SP2)

1) Out-of-bounds write

EUVDB-ID: #VU63855

Risk: Low

CVSSv4.0: 5.9 [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]

CVE-ID: CVE-2021-41864

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

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error when processing untrusted input. A local user can gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information.

Mitigation

Update the affected package the Linux Kernel (Live Patch 14 for SLE 15 SP2) to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Module for Live Patching: 15-SP2

kernel-livepatch-SLE15-SP2_Update_19-debugsource: before 2-2.2

kernel-livepatch-SLE15-SP2_Update_18-debugsource: before 4-2.2

kernel-livepatch-SLE15-SP2_Update_17-debugsource: before 5-2.2

kernel-livepatch-SLE15-SP2_Update_16-debugsource: before 6-2.2

kernel-livepatch-SLE15-SP2_Update_14-debugsource: before 6-2.2

kernel-livepatch-5_3_18-24_83-default-debuginfo: before 2-2.2

kernel-livepatch-5_3_18-24_83-default: before 2-2.2

kernel-livepatch-5_3_18-24_78-default-debuginfo: before 4-2.2

kernel-livepatch-5_3_18-24_78-default: before 4-2.2

kernel-livepatch-5_3_18-24_75-default-debuginfo: before 5-2.2

kernel-livepatch-5_3_18-24_75-default: before 5-2.2

kernel-livepatch-5_3_18-24_70-default-debuginfo: before 6-2.2

kernel-livepatch-5_3_18-24_70-default: before 6-2.2

kernel-livepatch-5_3_18-24_67-default-debuginfo: before 6-2.2

kernel-livepatch-5_3_18-24_67-default: before 6-2.2

CPE2.3

• cpe:2.3:o:suse:suse_linux_enterprise_module_for_live_patching:15-SP2:*:*:*:*:*:*:*
• cpe:2.3:o:suse:kernel-livepatch-sle15-sp2_update_19-debugsource:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:kernel-livepatch-sle15-sp2_update_18-debugsource:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:kernel-livepatch-sle15-sp2_update_17-debugsource:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:kernel-livepatch-sle15-sp2_update_16-debugsource:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:kernel-livepatch-sle15-sp2_update_14-debugsource:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:kernel-livepatch-5_3_18-24_83-default-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:kernel-livepatch-5_3_18-24_83-default:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:kernel-livepatch-5_3_18-24_78-default-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:kernel-livepatch-5_3_18-24_78-default:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:kernel-livepatch-5_3_18-24_75-default-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:kernel-livepatch-5_3_18-24_75-default:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:kernel-livepatch-5_3_18-24_70-default-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:kernel-livepatch-5_3_18-24_70-default:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:kernel-livepatch-5_3_18-24_67-default-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:kernel-livepatch-5_3_18-24_67-default:*:*:*:*:*:suse_linux:*:*

External links

https://www.suse.com/support/update/announcement/2021/suse-su-20213712-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.