Use After Free Affecting kernel-doc package, versions <0:4.18.0-193.75.1.el8_2


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

Exploit Maturity
Mature
EPSS
0.05% (25th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications

Snyk Learn

Learn about Use After Free vulnerabilities in an interactive lesson.

Start learning
  • Snyk IDSNYK-RHEL8-KERNELDOC-4063417
  • published14 Dec 2021
  • disclosed28 Jul 2021

Introduced: 28 Jul 2021

CVE-2021-0920  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade RHEL:8 kernel-doc to version 0:4.18.0-193.75.1.el8_2 or higher.
This issue was patched in RHSA-2022:0636.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-doc package and not the kernel-doc package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

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 Scores

version 3.1