Race Condition Affecting kernel-doc package, versions <0:4.18.0-348.7.1.el8_5


Severity

Recommended
0.0
medium
0
10

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.04% (5th percentile)

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  • Snyk IDSNYK-ROCKY8-KERNELDOC-3278881
  • published3 Feb 2023
  • disclosed18 Feb 2022

Introduced: 18 Feb 2022

CVE-2021-20321  (opens in a new tab)
CWE-362  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:8 kernel-doc to version 0:4.18.0-348.7.1.el8_5 or higher.
This issue was patched in RLSA-2021:5227.

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 Rocky-Linux. See How to fix? for Rocky-Linux:8 relevant fixed versions and status.

A race condition accessing file object in the Linux kernel OverlayFS subsystem was found in the way users do rename in specific way with OverlayFS. A local user could use this flaw to crash the system.

CVSS Scores

version 3.1