CVE-2021-0920

State: Published
Severity: 6.4 Medium
Published: Dec 15, 2021
Updated: Oct 21, 2025
Reserved: Nov 6, 2020

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

Scores

CVSS	Score	Vector	Source
3.1	6.4 Medium	CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H	CISA-ADP

Weaknesses

CWE-416 Use After Free

Affected Products

Product	Versions
Androidn/a	Android kernelAffected

References

https://source.android.com/security/bulletin/2021-11-01
[debian-lts-announce] 20211216 [SECURITY] [DLA 2843-1] linux security updatemailing-list
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-0920government-resource

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