SUSE update for the Linux Kernel (Live Patch 38 for SLE 12 SP5)

Published: 2023-03-28 | Updated: 2023-03-30

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2023-0266 CVE-2023-26545
CWE-ID	CWE-416 CWE-415
Exploitation vector	Local
Public exploit	Vulnerability #1 is being exploited in the wild.
Vulnerable software	SUSE Linux Enterprise Server for SAP Applications 12 Operating systems & Components / Operating system SUSE Linux Enterprise Server 12 Operating systems & Components / Operating system SUSE Linux Enterprise High Performance Computing 12 Operating systems & Components / Operating system SUSE Linux Enterprise Live Patching Operating systems & Components / Operating system kgraft-patch-4_12_14-122_136-default Operating systems & Components / Operating system package or component kgraft-patch-4_12_14-122_127-default Operating systems & Components / Operating system package or component kgraft-patch-4_12_14-122_124-default Operating systems & Components / Operating system package or component kgraft-patch-4_12_14-122_144-default Operating systems & Components / Operating system package or component kgraft-patch-4_12_14-122_133-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: #VU71482

Risk: High

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:Amber]

CVE-ID: CVE-2023-0266

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 snd_ctl_elem_read() function in the Linux kernel sound subsystem. A local user can trigger a use-after-free error and execute arbitrary code on the system.

Note, the vulnerability is being actively exploited in the wild.

Mitigation

Update the affected package the Linux Kernel (Live Patch 38 for SLE 12 SP5) to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server for SAP Applications 12: SP5

SUSE Linux Enterprise Server 12: SP5

SUSE Linux Enterprise High Performance Computing 12: SP5

SUSE Linux Enterprise Live Patching: 12-SP5

kgraft-patch-4_12_14-122_136-default: before 5-2.3

kgraft-patch-4_12_14-122_127-default: before 8-2.3

kgraft-patch-4_12_14-122_124-default: before 10-2.3

kgraft-patch-4_12_14-122_144-default: before 3-2.3

kgraft-patch-4_12_14-122_133-default: before 6-2.3

CPE2.3

External links

https://www.suse.com/support/update/announcement/2023/suse-su-20231619-1/

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: #VU73766

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-2023-26545

CWE-ID: CWE-415 - Double Free