SUSE update for the Linux Kernel (Live Patch 26 for SLE 12 SP5)

Published: 2022-04-15 | Updated: 2024-03-30

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2022-22942 CVE-2022-27666
CWE-ID	CWE-264 CWE-122
Exploitation vector	Local
Public exploit	Vulnerability #1 is being exploited in the wild. Public exploit code for vulnerability #2 is available.
Vulnerable software Subscribe	SUSE Linux Enterprise Live Patching Operating systems & Components / Operating system kgraft-patch-4_12_14-122_77-default Operating systems & Components / Operating system package or component kgraft-patch-4_12_14-122_74-default Operating systems & Components / Operating system package or component kgraft-patch-4_12_14-122_71-default Operating systems & Components / Operating system package or component kgraft-patch-4_12_14-122_103-default Operating systems & Components / Operating system package or component
Vendor	SUSE

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU61217

Risk: Low

CVSSv3.1: 7.5 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2022-22942

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 an error in the vmwgfx driver in Linux kernel. A local unprivileged user can gain access to files opened by other processes on the system through a dangling 'file' pointer.

Exploiting this vulnerability requires an attacker to have access to either /dev/dri/card0 or /dev/dri/rendererD128 and be able to issue an ioctl() on the resulting file descriptor.

Mitigation

Update the affected package the Linux Kernel (Live Patch 26 for SLE 12 SP5) to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Live Patching: 12-SP5

kgraft-patch-4_12_14-122_77-default: before 12-2.1

kgraft-patch-4_12_14-122_74-default: before 12-2.1

kgraft-patch-4_12_14-122_71-default: before 14-2.1

kgraft-patch-4_12_14-122_103-default: before 6-2.1

External links

http://www.suse.com/support/update/announcement/2022/suse-su-20221242-1/

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) Heap-based buffer overflow

EUVDB-ID: #VU61672