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CVE-2021-0920

Known Exploited (CISA KEV)MEDIUM
6.4
CVSS Severity Score
EPSS Score37.6550%
EPSS Percentile96.61th
PublishedDec 15, 2021
Last ModifiedOct 23, 2025

Vulnerability 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

Affected Platforms (CPE)

💻
Linux

Linux Kernel

<= 5.13
💻
Linux

Linux Kernel

= 5.14
💻
Linux

Linux Kernel

= 5.14
💻
Linux

Linux Kernel

= 5.14
💻
Google

Android

All versions
💻
Debian

Debian Linux

= 9.0

References & Advisories

🔗 https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html
🔗 https://source.android.com/security/bulletin/2021-11-01
🔗 https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html
🔗 https://source.android.com/security/bulletin/2021-11-01
🔗 https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-0920

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