NULL Pointer Dereference Affecting kernel-rt-modules package, versions <0:5.14.0-162.6.1.rt21.168.el9_1


Severity

Recommended
0.0
medium
0
10

Based on CentOS security rating.

Threat Intelligence

EPSS
0.04% (5th percentile)

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  • Snyk IDSNYK-CENTOS9-KERNELRTMODULES-2933644
  • published22 Jun 2022
  • disclosed25 Mar 2022

Introduced: 25 Mar 2022

CVE-2022-2153  (opens in a new tab)
CWE-476  (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 the Linux kernel’s KVM when attempting to set a SynIC IRQ. This issue makes it possible for a misbehaving VMM to write to SYNIC/STIMER MSRs, causing a NULL pointer dereference. This flaw allows an unprivileged local attacker on the host to issue specific ioctl calls, causing a kernel oops condition that results in a denial of service.

CVSS Scores

version 3.1