SUSE update for the Linux Kernel (Live Patch 27 for SLE 15 SP2)

Published: 2022-07-02

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2021-39698 CVE-2022-1116
CWE-ID	CWE-416 CWE-190
Exploitation vector	Local
Public exploit	N/A
Vulnerable software Subscribe	SUSE Linux Enterprise Server for SAP Applications Operating systems & Components / Operating system SUSE Linux Enterprise Server Operating systems & Components / Operating system SUSE Linux Enterprise Module for Live Patching Operating systems & Components / Operating system SUSE Linux Enterprise High Performance Computing Operating systems & Components / Operating system kernel-livepatch-SLE15-SP2_Update_27-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-150200_24_115-default-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-150200_24_115-default Operating systems & Components / Operating system package or component
Vendor	SUSE

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Use-after-free

EUVDB-ID: #VU61097

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-39698

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 in Linux kernel. A local user can run a specially crafted program to trigger the use-after-free error and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package the Linux Kernel (Live Patch 27 for SLE 15 SP2) to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server for SAP Applications: 15-SP2

SUSE Linux Enterprise Server: 15-SP2

SUSE Linux Enterprise Module for Live Patching: 15-SP2

SUSE Linux Enterprise High Performance Computing: 15-SP2

kernel-livepatch-SLE15-SP2_Update_27-debugsource: before 2-150200.2.2

kernel-livepatch-5_3_18-150200_24_115-default-debuginfo: before 2-150200.2.2

kernel-livepatch-5_3_18-150200_24_115-default: before 2-150200.2.2

External links

http://www.suse.com/support/update/announcement/2022/suse-su-20222237-1/

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.

2) Integer overflow

EUVDB-ID: #VU63633