CVE-2026-97582

CVE CVE-2026-97582EUVD EUVD-2026-86890Published 2026-09-25T10:22:03.000Z

What the advisory describes

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.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux patch: 0; patch: 7.2.7; d6fe1360f42e86262153927986dea6502daff703 <a2471ed17b0e6ff7bfb6b2ea8e6e5b04c309d293; patch: 6.12.111; patch: 7.3-rc3; d6fe1360f42e86262153927986dea6502daff703 <30755d3a5782cd704c8921cac8ee66dffe4383ea; 2.6.37; d6fe1360f42e86262153927986dea6502daff703 <9b12bd724db9db318e3a68be17693583dc29a066; patch: 6.18.53; d6fe1360f42e86262153927986dea6502daff703 <c6ab7f855891877a16d2e2ddf0cd0305fd098a85

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

Linux — Linux

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