DEBIAN-CVE-2026-23221

Advisory lineage Upstream: 1 Downstream: 3
Upstream
CVE-2026-23221
Published: 18 Feb 2026, 16:22
Last modified:28 Apr 2026, 20:31

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
7.8 HIGH
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

18 Feb 2026, 16:22
Published
Vulnerability first disclosed
28 Apr 2026, 20:31
Last Modified
Vulnerability information updated

Description

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 Metrics

  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Systems

  • debian•linux

    all | all | all | all | < 6.1.164-1 | < 6.12.74-2 | < 6.18.12-1

  • debian•linux-6.1

    < 6.1.164-1~deb11u1

References (1)