Use After Free Affecting kernel-rt-modules package, versions <0:5.14.0-162.6.1.rt21.168.el9_1


Severity

Recommended
medium

Based on CentOS security rating.

Threat Intelligence

EPSS
0.05% (19th percentile)

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  • Snyk IDSNYK-CENTOS9-KERNELRTMODULES-2881407
  • published14 Jun 2022
  • disclosed7 Apr 2022

Introduced: 7 Apr 2022

CVE-2022-1158  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Centos:9 kernel-rt-modules to version 0:5.14.0-162.6.1.rt21.168.el9_1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-rt-modules package and not the kernel-rt-modules package as distributed by Centos. See How to fix? for Centos:9 relevant fixed versions and status.

A flaw was found in KVM. When updating a guest's page table entry, vm_pgoff was improperly used as the offset to get the page's pfn. As vaddr and vm_pgoff are controllable by user-mode processes, this flaw allows unprivileged local users on the host to write outside the userspace region and potentially corrupt the kernel, resulting in a denial of service condition.

CVSS Scores

version 3.1