CVE-2021-0920

6.4 MEDIUM CISA KEV - Actively Exploited
Published: December 15, 2021 Modified: October 23, 2025
View on NVD

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

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html
Source: security@android.com
Mailing List Third Party Advisory
https://source.android.com/security/bulletin/2021-11-01
Source: security@android.com
Vendor Advisory
https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Third Party Advisory
https://source.android.com/security/bulletin/2021-11-01
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-0920
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Third Party Advisory US Government Resource

5 reference(s) from NVD

Quick Stats

CVSS v3 Score
6.4 / 10.0
EPSS (Exploit Probability)
0.9%
76th percentile
Exploitation Status
Actively Exploited
Remediation due: 2022-06-13

Weaknesses (CWE)

CWE-362 CWE-416 CWE-416

Affected Vendors

linux debian google

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