CVEvulnerability
CVE-2026-80655
- Status
- Received
- Published
- 2026-08-28
- Last modified
- 2026-10-21
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Description
In the Linux kernel, the following vulnerability has been resolved:
soc: xilinx: Fix race condition in event registration
The zynqmp_power driver registers handlers for suspend and subsystem
restart events using register_event(). However, the work structures
(zynqmp_pm_init_suspend_work and zynqmp_pm_init_restart_work) used by
these handlers were allocated and initialized after the registration
call.
This created a race window where, if the firmware triggered an event
immediately after registration but before allocation, the callback
(suspend_event_callback or subsystem_restart_event_callback) would
dereference a NULL pointer in work_pending(), leading to a crash.
Fix this by allocating and initializing the work structures before
registering the events.
References
- https://git.kernel.org/stable/c/07ea9081b8fefb99e2f427e0f0602a5e576cb120 git.kernel.org
- https://git.kernel.org/stable/c/d349aa118ff5e4cab88424ce1b16e08edd70f8bb git.kernel.org
- https://git.kernel.org/stable/c/e124f7b170337563d78a7a6aa152c897d229bc39 git.kernel.org
- https://git.kernel.org/stable/c/fb445935338405110baca8f541a2df3b4cb8d712 git.kernel.org