CVE-2026-23221
High
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.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Linux Kernel
PublishedFeb 18, 2026
First seenFeb 18, 2026
How to fix
Update
- linux linux_kernel5.15.201, 6.1.164, 6.6.127, 6.12.74, 6.18.11, 6.19.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.10 ≤ v < 5.15.201, 5.16 ≤ v < 6.1.164, 6.2 ≤ v < 6.6.127, 6.7 ≤ v < 6.12.74, 6.13 ≤ v < 6.18.11, 6.19 ≤ v < 6.19.1 | 5.15.201, 6.1.164, 6.6.127, 6.12.74, 6.18.11, 6.19.1 |
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