NULL Pointer Dereference Affecting kernel-rt-modules-extra package, versions <0:5.14.0-70.75.1.rt21.146.el9_0


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-RHEL9-KERNELRTMODULESEXTRA-5955700
  • published14 Mar 2023
  • disclosed22 Nov 2022

Introduced: 22 Nov 2022

CVE-2023-28327  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade RHEL:9 kernel-rt-modules-extra to version 0:5.14.0-70.75.1.rt21.146.el9_0 or higher.
This issue was patched in RHSA-2023:5603.

NVD Description

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

A NULL pointer dereference flaw was found in the UNIX protocol in net/unix/diag.c In unix_diag_get_exact in the Linux Kernel. The newly allocated skb does not have sk, leading to a NULL pointer. This flaw allows a local user to crash or potentially cause a denial of service.

CVSS Scores

version 3.1