Vulnerability identifier: #VU59811

Vulnerability risk: Low

CVSSv3.1:

CVE-ID: CVE-2021-0920

CWE-ID:

Exploitation vector: Local

Exploit availability:

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

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
Install updates from vendor's website.

Vulnerable software versions

Linux kernel:

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Fixed software versions

CPE

• cpe:2.3:o:linux_foundation:linux_kernel:*:*:*:*:*:*:*:*

External links
http://source.android.com/security/bulletin/2021-11-01
http://lists.debian.org/debian-lts-announce/2021/12/msg00012.html

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Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?