Race Condition Affecting kernel-tools-libs package, versions <0:4.18.0-348.el8


Severity

Recommended
medium

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.08% (36th 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-KERNELTOOLSLIBS-4148302
  • published26 Jul 2021
  • disclosed3 Jun 2020

Introduced: 3 Jun 2020

CVE-2020-29368  (opens in a new tab)
CWE-362  (opens in a new tab)
First added by Snyk

How to fix?

Upgrade RHEL:8 kernel-tools-libs to version 0:4.18.0-348.el8 or higher.
This issue was patched in RHSA-2021:4356.

NVD Description

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

An issue was discovered in __split_huge_pmd in mm/huge_memory.c in the Linux kernel before 5.7.5. The copy-on-write implementation can grant unintended write access because of a race condition in a THP mapcount check, aka CID-c444eb564fb1.

CVSS Scores

version 3.1