Use After Free Affecting kpatch-patch-5_14_0-162_12_1 package, versions <0:1-2.el9_1


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

Exploit Maturity
Attacked
EPSS
3.67% (90th percentile)

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  • Snyk IDSNYK-RHEL9-KPATCHPATCH5140162121-10906835
  • published24 Jul 2025
  • disclosed13 Jan 2023

Introduced: 13 Jan 2023

CVE-2023-0266  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade RHEL:9 kpatch-patch-5_14_0-162_12_1 to version 0:1-2.el9_1 or higher.
This issue was patched in RHSA-2023:1471.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kpatch-patch-5_14_0-162_12_1 package and not the kpatch-patch-5_14_0-162_12_1 package as distributed by RHEL. See How to fix? for RHEL:9 relevant fixed versions and status.

A use after free vulnerability exists in the ALSA PCM package in the Linux Kernel. SNDRV_CTL_IOCTL_ELEM_{READ|WRITE}32 is missing locks that can be used in a use-after-free that can result in a priviledge escalation to gain ring0 access from the system user. We recommend upgrading past commit 56b88b50565cd8b946a2d00b0c83927b7ebb055e

CVSS Base Scores

version 3.1