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Vulnerabilities
Vulnerability

CVE-2026-23221

Reference data from vuln.mlab.sh, coverage from our own index.

CVSS
5.5 Medium
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS
0.12%
Risk score
1.2
Published
2026-02-18
Status
Published

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. A use-after-free flaw was found in the Linux kernel's Freescale Management Complex (fsl-mc) bus driver. The driver_override_show() sysfs function reads the driver_override string without acquiring the device_lock, while driver_override_store() modifies and frees the string while holding the lock. This race condition can result in a use-after-free if the string is freed by a concurrent store operation while being read by the show function.

Weaknesses

CWE-663

Coverage 4

Advisories and references