CVEvulnerability
CVE-2026-98656
- Status
- Received
- Published
- 2026-10-18
- Last modified
- 2026-10-21
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Description
In the Linux kernel, the following vulnerability has been resolved:
iio: trigger: cancel reenable_work before freeing trigger
iio_trigger_notify_done_atomic() defers ->reenable() into
trig->reenable_work on the system workqueue, and the worker dereferences
the owning trigger through container_of(). Nothing cancels this work
before iio_trig_release() frees the trigger, so a worker armed by the
last in-flight IRQ can outlive the free and touch freed memory.
Cancel it at the top of iio_trig_release(), which every free path
reaches through the device core's final put_device().
Found by an in-house static analysis tool.
References
- https://git.kernel.org/stable/c/2a57b9246cecd5dd797a42eb310d6c8816f26d9e git.kernel.org
- https://git.kernel.org/stable/c/882d0011c59ff8ac15188ec9ce071399ecfa10ad git.kernel.org
- https://git.kernel.org/stable/c/ac5d26a46c90ff61fd574eff4e8f0d71c905828a git.kernel.org
- https://git.kernel.org/stable/c/cf513df1a2c75566cdc802d9da47f62e8d6cfd18 git.kernel.org
- https://git.kernel.org/stable/c/e64703280ce7a23a43c27efebeb7da457c88bf5c git.kernel.org