Use After Free Affecting kernel-rt-modules package, versions <0:4.18.0-425.19.2.rt7.230.el8_7


Severity

Recommended
0.0
high
0
10

Based on AlmaLinux security rating.

Threat Intelligence

Exploit Maturity
Mature
EPSS
0.08% (37th percentile)

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  • Snyk IDSNYK-ALMALINUX8-KERNELRTMODULES-5634451
  • published28 May 2023
  • disclosed27 Mar 2023

Introduced: 27 Mar 2023

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

How to fix?

Upgrade AlmaLinux:8 kernel-rt-modules to version 0:4.18.0-425.19.2.rt7.230.el8_7 or higher.
This issue was patched in ALSA-2023:1584.

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 AlmaLinux. See How to fix? for AlmaLinux:8 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 Scores

version 3.1