Use After Free Affecting kernel-devel package, versions <0:4.18.0-348.20.1.el8_5


Severity

Recommended
0.0
high
0
10

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-ROCKY8-KERNELDEVEL-3276741
  • published3 Feb 2023
  • disclosed4 Feb 2022

Introduced: 4 Feb 2022

CVE-2021-4154  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:8 kernel-devel to version 0:4.18.0-348.20.1.el8_5 or higher.
This issue was patched in RLSA-2022:0825.

NVD Description

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

A use-after-free flaw was found in cgroup1_parse_param in kernel/cgroup/cgroup-v1.c in the Linux kernel's cgroup v1 parser. A local attacker with a user privilege could cause a privilege escalation by exploiting the fsconfig syscall parameter leading to a container breakout and a denial of service on the system.

CVSS Scores

version 3.1