soc: xilinx: Fix race condition in event registration

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Summary

CVECVE-2026-80655
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-28 08:16:50 UTC
Updated2026-08-28 08:16:50 UTC
DescriptionIn 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.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected fcf544ac64397776a18246eba5a8ca72a47c4405 d349aa118ff5e4cab88424ce1b16e08edd70f8bb git Not specified
CNA Linux Linux affected fcf544ac64397776a18246eba5a8ca72a47c4405 fb445935338405110baca8f541a2df3b4cb8d712 git Not specified
CNA Linux Linux affected 6.11 Not specified
CNA Linux Linux unaffected 6.11 semver Not specified
CNA Linux Linux unaffected 7.1.5 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/d349aa118ff5e4cab88424ce1b16e08edd70f8bb 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/fb445935338405110baca8f541a2df3b4cb8d712 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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