SUSE update for the Linux Kernel (Live Patch 12 for SLE 15 SP3)

Published: 2022-03-01 | Updated: 2024-01-18

Risk	High
Patch available	YES
Number of vulnerabilities	3
CVE-ID	CVE-2021-0920 CVE-2021-22600 CVE-2022-0516
CWE-ID	CWE-416 CWE-415 CWE-787
Exploitation vector	Local
Public exploit	Vulnerability #1 is being exploited in the wild. Vulnerability #2 is being exploited in the wild.
Vulnerable software Subscribe	SUSE Linux Enterprise Server Operating systems & Components / Operating system SUSE Linux Enterprise High Performance Computing Operating systems & Components / Operating system SUSE Linux Enterprise Server for SAP Applications Operating systems & Components / Operating system SUSE Linux Enterprise Module for Live Patching Operating systems & Components / Operating system SUSE Linux Enterprise Micro Operating systems & Components / Operating system kernel-livepatch-SLE15-SP2_Update_23-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP2_Update_22-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP2_Update_21-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP2_Update_20-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP2_Update_19-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP2_Update_18-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP2_Update_17-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP2_Update_16-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP2_Update_15-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP2_Update_14-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP2_Update_13-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP2_Update_12-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP2_Update_11-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-24_99-default-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-24_99-default Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-24_96-default-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-24_96-default Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-24_93-default-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-24_93-default Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-24_86-default-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-24_86-default Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-24_83-default-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-24_83-default Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-24_78-default-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-24_78-default Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-24_75-default-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-24_75-default Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-24_70-default-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-24_70-default Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-24_67-default-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-24_67-default Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-24_64-default-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-24_64-default Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-24_61-default-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-24_61-default Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-24_53_4-default-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-24_53_4-default Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-24_52-default-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-24_52-default Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-59_40-default-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP3_Update_9-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP3_Update_6-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP3_Update_5-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP3_Update_3-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP3_Update_1-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP3_Update_0-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-59_5-default-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-59_5-default Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-59_40-default Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-59_34-default-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-59_34-default Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-59_24-default-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-59_24-default Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-59_19-default-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-59_19-default Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-59_13-default-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-59_13-default Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-57-default-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-57-default Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-150300_59_46-default-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-150300_59_46-default Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-150300_59_43-default-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-150300_59_43-default Operating systems & Components / Operating system package or component
Vendor	SUSE

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) Use-after-free

EUVDB-ID: #VU59811

Risk: Low

CVSSv3.1: 6.1 [CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2021-0920

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

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

The vulnerability exists due to a use-after-free error within the unix_scm_to_skb() function of af_unix.c in Linux kernel. A local user can run a specially crafted program to trigger a race condition and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package the Linux Kernel (Live Patch 12 for SLE 15 SP3) to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server: 15-SP2 - 15-SP3-LTSS

SUSE Linux Enterprise High Performance Computing: 15-SP2 - 15-SP3-LTSS

SUSE Linux Enterprise Server for SAP Applications: 15-SP2 - 15-SP3

SUSE Linux Enterprise Module for Live Patching: 15-SP2 - 15-SP3

SUSE Linux Enterprise Micro: 5.1

kernel-livepatch-SLE15-SP2_Update_23-debugsource: before 3-2.1

kernel-livepatch-SLE15-SP2_Update_22-debugsource: before 4-2.1

kernel-livepatch-SLE15-SP2_Update_21-debugsource: before 5-2.1

kernel-livepatch-SLE15-SP2_Update_20-debugsource: before 6-2.1

kernel-livepatch-SLE15-SP2_Update_19-debugsource: before 6-2.1

kernel-livepatch-SLE15-SP2_Update_18-debugsource: before 8-2.1

kernel-livepatch-SLE15-SP2_Update_17-debugsource: before 9-2.1

kernel-livepatch-SLE15-SP2_Update_16-debugsource: before 10-2.1

kernel-livepatch-SLE15-SP2_Update_15-debugsource: before 10-2.1

kernel-livepatch-SLE15-SP2_Update_14-debugsource: before 10-2.1

kernel-livepatch-SLE15-SP2_Update_13-debugsource: before 12-2.1

kernel-livepatch-SLE15-SP2_Update_12-debugsource: before 12-2.1

kernel-livepatch-SLE15-SP2_Update_11-debugsource: before 15-2.2

kernel-livepatch-5_3_18-24_99-default-debuginfo: before 3-2.1

kernel-livepatch-5_3_18-24_99-default: before 3-2.1

kernel-livepatch-5_3_18-24_96-default-debuginfo: before 4-2.1

kernel-livepatch-5_3_18-24_96-default: before 4-2.1

kernel-livepatch-5_3_18-24_93-default-debuginfo: before 5-2.1

kernel-livepatch-5_3_18-24_93-default: before 5-2.1

kernel-livepatch-5_3_18-24_86-default-debuginfo: before 6-2.1

kernel-livepatch-5_3_18-24_86-default: before 6-2.1

kernel-livepatch-5_3_18-24_83-default-debuginfo: before 6-2.1

kernel-livepatch-5_3_18-24_83-default: before 6-2.1

kernel-livepatch-5_3_18-24_78-default-debuginfo: before 8-2.1

kernel-livepatch-5_3_18-24_78-default: before 8-2.1

kernel-livepatch-5_3_18-24_75-default-debuginfo: before 9-2.1

kernel-livepatch-5_3_18-24_75-default: before 9-2.1

kernel-livepatch-5_3_18-24_70-default-debuginfo: before 10-2.1

kernel-livepatch-5_3_18-24_70-default: before 10-2.1

kernel-livepatch-5_3_18-24_67-default-debuginfo: before 10-2.1

kernel-livepatch-5_3_18-24_67-default: before 10-2.1

kernel-livepatch-5_3_18-24_64-default-debuginfo: before 12-2.1

kernel-livepatch-5_3_18-24_64-default: before 12-2.1

kernel-livepatch-5_3_18-24_61-default-debuginfo: before 12-2.1

kernel-livepatch-5_3_18-24_61-default: before 12-2.1

kernel-livepatch-5_3_18-24_53_4-default-debuginfo: before 10-2.1

kernel-livepatch-5_3_18-24_53_4-default: before 10-2.1

kernel-livepatch-5_3_18-24_52-default-debuginfo: before 15-2.2

kernel-livepatch-5_3_18-24_52-default: before 15-2.2

kernel-livepatch-5_3_18-59_40-default-debuginfo: before 4-150300.2.1

kernel-livepatch-SLE15-SP3_Update_9-debugsource: before 5-150300.2.1

kernel-livepatch-SLE15-SP3_Update_6-debugsource: before 6-150300.2.1

kernel-livepatch-SLE15-SP3_Update_5-debugsource: before 8-150300.2.1

kernel-livepatch-SLE15-SP3_Update_3-debugsource: before 10-150300.2.1

kernel-livepatch-SLE15-SP3_Update_1-debugsource: before 10-150300.2.1

kernel-livepatch-SLE15-SP3_Update_0-debugsource: before 12-3.1

kernel-livepatch-5_3_18-59_5-default-debuginfo: before 10-150300.2.1

kernel-livepatch-5_3_18-59_5-default: before 10-150300.2.1

kernel-livepatch-5_3_18-59_40-default: before 4-150300.2.1

kernel-livepatch-5_3_18-59_34-default-debuginfo: before 5-150300.2.1

kernel-livepatch-5_3_18-59_34-default: before 5-150300.2.1

kernel-livepatch-5_3_18-59_24-default-debuginfo: before 6-150300.2.1

kernel-livepatch-5_3_18-59_24-default: before 6-150300.2.1

kernel-livepatch-5_3_18-59_19-default-debuginfo: before 8-150300.2.1

kernel-livepatch-5_3_18-59_19-default: before 8-150300.2.1

kernel-livepatch-5_3_18-59_13-default-debuginfo: before 10-150300.2.1

kernel-livepatch-5_3_18-59_13-default: before 10-150300.2.1

kernel-livepatch-5_3_18-57-default-debuginfo: before 12-3.1

kernel-livepatch-5_3_18-57-default: before 12-3.1

kernel-livepatch-5_3_18-150300_59_46-default-debuginfo: before 3-150300.2.1

kernel-livepatch-5_3_18-150300_59_46-default: before 3-150300.2.1

kernel-livepatch-5_3_18-150300_59_43-default-debuginfo: before 3-150300.2.1

kernel-livepatch-5_3_18-150300_59_43-default: before 3-150300.2.1

External links

http://www.suse.com/support/update/announcement/2022/suse-su-20220619-1/

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?

Yes. This vulnerability is being exploited in the wild.

2) Double Free

EUVDB-ID: #VU63766

Risk: High

CVSSv3.1: 8.4 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2021-22600

CWE-ID: CWE-415 - Double Free

Exploit availability: Yes

Description

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

The vulnerability exists due to a boundary error in the packet_set_ring() function in net/packet/af_packet.c. A local user can pass specially crafted data to the application, trigger double free error and escalate privileges on the system.

Note, the vulnerability is being actively exploited in the wild against Android users.