Use After Free Affecting kernel-rt-debug-kvm package, versions <0:4.18.0-425.13.1.rt7.223.el8_7


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.1% (43rd percentile)

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  • Snyk IDSNYK-RHEL8-KERNELRTDEBUGKVM-4378297
  • published31 Oct 2022
  • disclosed7 Jul 2021

Introduced: 7 Jul 2021

CVE-2022-41222  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade RHEL:8 kernel-rt-debug-kvm to version 0:4.18.0-425.13.1.rt7.223.el8_7 or higher.
This issue was patched in RHSA-2023:0854.

NVD Description

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

mm/mremap.c in the Linux kernel before 5.13.3 has a use-after-free via a stale TLB because an rmap lock is not held during a PUD move.

CVSS Scores

version 3.1