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Use of a Non-reentrant Function in a Concurrent Context The advisory has been revoked - it doesn't affect any version of package kernel-headers  (opens in a new tab)

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0.12% (3rd percentile)

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  • Snyk IDSNYK-RHEL10-KERNELHEADERS-15313761
  • published19 Feb 2026
  • disclosed18 Feb 2026
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Introduced: 18 Feb 2026

CVE-2026-23221  (opens in a new tab)
CWE-663  (opens in a new tab)

Amendment

The Red Hat security team deemed this advisory irrelevant for RHEL:10.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-headers package and not the kernel-headers package as distributed by RHEL.

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.