Improper Initialization Affecting kernel-doc package, versions <0:4.18.0-348.2.1.el8_5


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.04% (5th percentile)

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  • Snyk IDSNYK-RHEL8-KERNELDOC-4202609
  • published26 Sept 2021
  • disclosed23 Sept 2021

Introduced: 23 Sep 2021

CVE-2021-20317  (opens in a new tab)
CWE-665  (opens in a new tab)

How to fix?

Upgrade RHEL:8 kernel-doc to version 0:4.18.0-348.2.1.el8_5 or higher.
This issue was patched in RHSA-2021:4647.

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.

A flaw was found in the Linux kernel. A corrupted timer tree caused the task wakeup to be missing in the timerqueue_add function in lib/timerqueue.c. This flaw allows a local attacker with special user privileges to cause a denial of service, slowing and eventually stopping the system while running OSP.

CVSS Scores

version 3.1