Use After Free Affecting kernel-uek64k-modules-wireless package, versions <0:6.12.0-200.74.27.el9uek


Severity

Recommended
0.0
high
0
10

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.12% (3rd percentile)

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  • Snyk IDSNYK-ORACLE9-KERNELUEK64KMODULESWIRELESS-15867342
  • published1 Apr 2026
  • disclosed18 Feb 2026

Introduced: 18 Feb 2026

CVE-2026-23221  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Oracle:9 kernel-uek64k-modules-wireless to version 0:6.12.0-200.74.27.el9uek or higher.
This issue was patched in ELSA-2026-50160.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-uek64k-modules-wireless package and not the kernel-uek64k-modules-wireless package as distributed by Oracle. See How to fix? for Oracle:9 relevant fixed versions and status.

In the Linux kernel, the following vulnerability has been resolved:

bus: fsl-mc: fix use-after-free in driver_override_show()

The driver_override_show() function reads the driver_override string without holding the device_lock. However, driver_override_store() uses driver_set_override(), which modifies and frees the string while holding the device_lock.

This can result in a concurrent use-after-free if the string is freed by the store function while being read by the show function.

Fix this by holding the device_lock around the read operation.

CVSS Base Scores

version 3.1