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CVE-2021-0920

UNKNOWN
Published 2021-12-15T18:05:31.000Z
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Expert Analysis

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CVSS Score

V3.1
6.4
/10
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.005
probability
of exploitation in the wild

There is a 0.5% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.653
Higher than 65.3% of all CVEs

Attack Vector Metrics

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED

Impact Metrics

Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

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

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Known Exploited Vulnerability

This vulnerability is actively being exploited in the wild

View KEV Details

Remediation Status

Overdue

Due Date

June 13, 2022

Added to KEV

May 23, 2022

Required Action

Apply updates per vendor instructions.

Affected Product

Vendor/Project: Android
Product: Kernel

Ransomware Risk

Known Ransomware Use
KEV Catalog Version: 2025.01.24 Released: January 24, 2025

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed MODERATE

GHSA-r93f-j2vf-vmc4

Advisory Details

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

CVSS Scoring

CVSS Score

5.0

CVSS Vector

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2021-0920
WEB https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html
WEB https://source.android.com/security/bulletin/2021-11-01

Advisory provided by GitHub Security Advisory Database. Published: December 16, 2021, Modified: July 13, 2022

References

https://source.android.com/security/bulletin/2021-11-01
https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html
Published: 2021-12-15T18:05:31.000Z
Last Modified: 2025-07-28T19:45:53.191Z
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