SUSE update for the Linux Kernel (Live Patch 28 for SLE 12 SP5)

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU61245

Risk: Low

CVSSv4.0: 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/E:A/U:Clear]

CVE-ID: CVE-2022-0492

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: Yes

Description

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

The vulnerability exists due to a logic error within the cgroup_release_agent_write() function in  kernel/cgroup/cgroup-v1.c. A local user can use the cgroups v1 release_agent feature to escalate privileges and bypass the namespace isolation.

Mitigation

Update the affected package the Linux Kernel (Live Patch 28 for SLE 12 SP5) to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server: 15-SP1 - 15-SP3-LTSS

SUSE Linux Enterprise High Performance Computing: 15-SP1 - 15-SP3-LTSS

SUSE Linux Enterprise Module for Live Patching: 15-SP1 - 15-SP4

SUSE Linux Enterprise Server for SAP Applications: 15-SP1 - 15

SUSE Linux Enterprise Live Patching: 12-SP4 - 12-SP5

kgraft-patch-4_12_14-95_88-default: before 2-2.1

kgraft-patch-4_12_14-122_110-default: before 2-2.1

kernel-livepatch-4_12_14-150_83-default-debuginfo: before 2-150000.2.1

kernel-livepatch-4_12_14-150_83-default: before 2-150000.2.1

kernel-livepatch-4_12_14-197_105-default: before 2-150100.2.1

kernel-livepatch-SLE15-SP2_Update_24-debugsource: before 3-150200.2.1

kernel-livepatch-SLE15-SP2_Update_23-debugsource: before 4-150200.2.1

kernel-livepatch-SLE15-SP2_Update_22-debugsource: before 5-150200.2.1

kernel-livepatch-SLE15-SP2_Update_21-debugsource: before 6-150200.2.1

kernel-livepatch-SLE15-SP2_Update_20-debugsource: before 7-150200.2.1

kernel-livepatch-SLE15-SP2_Update_19-debugsource: before 7-150200.2.1

kernel-livepatch-SLE15-SP2_Update_18-debugsource: before 9-150200.2.1

kernel-livepatch-SLE15-SP2_Update_17-debugsource: before 10-150200.2.1

kernel-livepatch-5_3_18-24_99-default-debuginfo: before 4-150200.2.1

kernel-livepatch-5_3_18-24_99-default: before 4-150200.2.1

kernel-livepatch-5_3_18-24_96-default-debuginfo: before 5-150200.2.1

kernel-livepatch-5_3_18-24_96-default: before 5-150200.2.1

kernel-livepatch-5_3_18-24_93-default-debuginfo: before 6-150200.2.1

kernel-livepatch-5_3_18-24_93-default: before 6-150200.2.1

kernel-livepatch-5_3_18-24_86-default-debuginfo: before 7-150200.2.1

kernel-livepatch-5_3_18-24_86-default: before 7-150200.2.1

kernel-livepatch-5_3_18-24_83-default-debuginfo: before 7-150200.2.1

kernel-livepatch-5_3_18-24_83-default: before 7-150200.2.1

kernel-livepatch-5_3_18-24_78-default-debuginfo: before 9-150200.2.1

kernel-livepatch-5_3_18-24_78-default: before 9-150200.2.1

kernel-livepatch-5_3_18-24_75-default-debuginfo: before 10-150200.2.1

kernel-livepatch-5_3_18-24_75-default: before 10-150200.2.1

kernel-livepatch-5_3_18-24_102-default-debuginfo: before 3-150200.2.1

kernel-livepatch-5_3_18-24_102-default: before 3-150200.2.1

CPE2.3

• cpe:2.3:o:suse:suse_linux_enterprise_server:15-SP1:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server:15-SP2:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server:15-SP3-LTSS:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_high_performance_computing:15-SP1:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_high_performance_computing:15-SP2:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_high_performance_computing:15-SP3-LTSS:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_module_for_live_patching:15-SP1:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_module_for_live_patching:15-SP2:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_module_for_live_patching:15-SP4:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server_for_sap_applications:15-SP1:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_live_patching:12-SP4:*:*:*:*:*:*:*
• cpe:2.3:a:suse:kgraft-patch-4_12_14-95_88-default:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:kgraft-patch-4_12_14-122_110-default:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:kernel-livepatch-4_12_14-150_83-default-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:kernel-livepatch-4_12_14-150_83-default:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:kernel-livepatch-4_12_14-197_105-default:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:kernel-livepatch-sle15-sp2_update_24-debugsource:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:kernel-livepatch-sle15-sp2_update_23-debugsource:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:kernel-livepatch-sle15-sp2_update_22-debugsource:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:kernel-livepatch-sle15-sp2_update_21-debugsource:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:kernel-livepatch-sle15-sp2_update_20-debugsource:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:kernel-livepatch-sle15-sp2_update_19-debugsource:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:kernel-livepatch-sle15-sp2_update_18-debugsource:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:kernel-livepatch-sle15-sp2_update_17-debugsource:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:kernel-livepatch-5_3_18-24_99-default-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:kernel-livepatch-5_3_18-24_99-default:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:kernel-livepatch-5_3_18-24_96-default-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:kernel-livepatch-5_3_18-24_96-default:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:kernel-livepatch-5_3_18-24_93-default-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:kernel-livepatch-5_3_18-24_93-default:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:kernel-livepatch-5_3_18-24_86-default-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:kernel-livepatch-5_3_18-24_86-default:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:kernel-livepatch-5_3_18-24_83-default-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:kernel-livepatch-5_3_18-24_83-default:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:kernel-livepatch-5_3_18-24_78-default-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:kernel-livepatch-5_3_18-24_78-default:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:kernel-livepatch-5_3_18-24_75-default-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:kernel-livepatch-5_3_18-24_75-default:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:kernel-livepatch-5_3_18-24_102-default-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:kernel-livepatch-5_3_18-24_102-default:*:*:*:*:*:suse_linux:*:*

External links

https://www.suse.com/support/update/announcement/2022/suse-su-20220991-1/

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. However, a fully functional exploit for this vulnerability is available.