Improper Authentication Affecting kernel-doc package, versions <0:4.18.0-372.9.1.el8


Severity

Recommended
high

Based on CentOS security rating.

Threat Intelligence

EPSS
0.04% (12th 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 Improper Authentication vulnerabilities in an interactive lesson.

Start learning
  • Snyk IDSNYK-CENTOS8-KERNELDOC-2329212
  • published4 Jan 2022
  • disclosed12 Sept 2021

Introduced: 12 Sep 2021

CVE-2021-4197  (opens in a new tab)
CWE-287  (opens in a new tab)

How to fix?

Upgrade Centos:8 kernel-doc to version 0:4.18.0-372.9.1.el8 or higher.

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 Centos. See How to fix? for Centos:8 relevant fixed versions and status.

An unprivileged write to the file handler flaw in the Linux kernel's control groups and namespaces subsystem was found in the way users have access to some less privileged process that are controlled by cgroups and have higher privileged parent process. It is actually both for cgroup2 and cgroup1 versions of control groups. A local user could use this flaw to crash the system or escalate their privileges on the system.

CVSS Scores

version 3.1