CVE-2021-0920

Android

Published 15 Dec 2021 · updated 17 Jun 2026 · Analyzed

6.4 Medium · CVSS 3.1, NVD

Exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on 23 May 2022, with a remediation deadline of 13 Jun 2022 for US federal agencies.

Required action: Apply updates per vendor instructions.

Description

In unix_scm_to_skb of af_unix.c, there is a possible use after free bug due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-196926917References: Upstream kernel

References

lists.debian.org/debian-lts-announce/2021/12/msg00012.html · Mailing List, Third Party Advisory
source.android.com/security/bulletin/2021-11-01 · Vendor Advisory
www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-0920 · Third Party Advisory, US Government Resource