Improper Initialization Affecting kernel-rt-core package, versions <0:4.18.0-348.2.1.rt7.132.el8_5


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.04% (6th 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 IDSNYK-RHEL8-KERNELRTCORE-4209010
  • 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)
First added by Snyk

How to fix?

Upgrade RHEL:8 kernel-rt-core to version 0:4.18.0-348.2.1.rt7.132.el8_5 or higher.
This issue was patched in RHSA-2021:4646.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-rt-core package and not the kernel-rt-core 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