CVE-2026-23221 Details
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.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/148891e95014b5dc5878acefa57f1940c281c431 | kernel.org | Patch |
| https://git.kernel.org/stable/c/1d6bd6183e723a7b256ff34bbb5b498b5f4f2ec0 | kernel.org | Patch |
| https://git.kernel.org/stable/c/a2ae33e1c6361e960a4d00f7cf75d880b54f9528 | kernel.org | Patch |
| https://git.kernel.org/stable/c/b1983840287303e0dfb401b1b6cecc5ea7471e90 | kernel.org | Patch |
| https://git.kernel.org/stable/c/c424e72cfa67e7e1477035058a8a659f2c0ea637 | kernel.org | Patch |
| https://git.kernel.org/stable/c/c71dfb7833db7af652ee8f65011f14c97c47405d | kernel.org | Patch |
| https://git.kernel.org/stable/c/dd8ba8c0c3f3916d4ee1e3a09da9cd5caff5d227 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-416 | Use After Free | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 5.10, < 5.15.201 >= 5.16, < 6.1.164 >= 6.2, < 6.6.127 >= 6.7, < 6.12.74 >= 6.13, < 6.18.11 >= 6.19, < 6.19.1 |
CPE
Remediation
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Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| Mar 18, 2026 | Initial Analysis | [email protected] |
| Feb 23, 2026 | CVE Modified | kernel.org |
| Feb 19, 2026 | CVE Modified | kernel.org |
| Feb 18, 2026 | New CVE Received | kernel.org |