CVE-2026-97582

hwmon: (gpio-fan) Fix use-after-free in alarm work

State: Published
Severity: Not scored
Published: Sep 25, 2026
Updated: Oct 30, 2026
Reserved: Sep 24, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

hwmon: (gpio-fan) Fix use-after-free in alarm work

fan_alarm_irq_handler() queues fan_data->alarm_work, but nothing cancels it. fan_alarm_notify() dereferences fan_data and its hwmon device. On unbind, devres frees the interrupt, which only waits for the handler itself, and then releases the hwmon device and fan_data, so a pending fan_alarm_notify() can run after those frees.

Replace INIT_WORK() with devm_work_autocancel(), registered before devm_request_irq(). The devres cleanup then frees the interrupt first, so no new work can be queued, and cancels the work while fan_data and the hwmon device are still alive.

This issue was found by an in-house static analysis tool.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	d6fe1360f42e86262153927986dea6502daff703 to before 7f96803f612134f585ab3b39e6d5b2d4b9c0606fAffected d6fe1360f42e86262153927986dea6502daff703 to before 594c62eea7c82f526054496e9fa9b895122a8016Affected d6fe1360f42e86262153927986dea6502daff703 to before 6e67d9bdac810edacef78cbaeedd34445aa8ceb7Affected d6fe1360f42e86262153927986dea6502daff703 to before e9fc7d53b2eb34c0a607d1659f49b46911aaf16cAffected d6fe1360f42e86262153927986dea6502daff703 to before 9b12bd724db9db318e3a68be17693583dc29a066Affected d6fe1360f42e86262153927986dea6502daff703 to before 30755d3a5782cd704c8921cac8ee66dffe4383eaAffected d6fe1360f42e86262153927986dea6502daff703 to before c6ab7f855891877a16d2e2ddf0cd0305fd098a85Affected d6fe1360f42e86262153927986dea6502daff703 to before a2471ed17b0e6ff7bfb6b2ea8e6e5b04c309d293Affected
LinuxLinux	2.6.37Affected before 2.6.37Not affected 5.10.273 through 5.10.Not affected 5.15.222 through 5.15.Not affected 6.1.189 through 6.1.Not affected 6.6.158 through 6.6.Not affected 6.12.111 through 6.12.Not affected 6.18.53 through 6.18.Not affected 7.2.7 through 7.2.*Not affected 7.3 and laterNot affected

Product

Versions

LinuxLinux

d6fe1360f42e86262153927986dea6502daff703 to before 7f96803f612134f585ab3b39e6d5b2d4b9c0606fAffected
d6fe1360f42e86262153927986dea6502daff703 to before 594c62eea7c82f526054496e9fa9b895122a8016Affected
d6fe1360f42e86262153927986dea6502daff703 to before 6e67d9bdac810edacef78cbaeedd34445aa8ceb7Affected
d6fe1360f42e86262153927986dea6502daff703 to before e9fc7d53b2eb34c0a607d1659f49b46911aaf16cAffected
d6fe1360f42e86262153927986dea6502daff703 to before 9b12bd724db9db318e3a68be17693583dc29a066Affected
d6fe1360f42e86262153927986dea6502daff703 to before 30755d3a5782cd704c8921cac8ee66dffe4383eaAffected
d6fe1360f42e86262153927986dea6502daff703 to before c6ab7f855891877a16d2e2ddf0cd0305fd098a85Affected
d6fe1360f42e86262153927986dea6502daff703 to before a2471ed17b0e6ff7bfb6b2ea8e6e5b04c309d293Affected

LinuxLinux

2.6.37Affected
before 2.6.37Not affected
5.10.273 through 5.10.*Not affected
5.15.222 through 5.15.*Not affected
6.1.189 through 6.1.*Not affected
6.6.158 through 6.6.*Not affected
6.12.111 through 6.12.*Not affected
6.18.53 through 6.18.*Not affected
7.2.7 through 7.2.*Not affected
7.3 and laterNot affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.