Bug 2525385 (CVE-2026-80655) - CVE-2026-80655 kernel: soc: xilinx: Fix race condition in event registration
Summary: CVE-2026-80655 kernel: soc: xilinx: Fix race condition in event registration
Keywords:
Status: NEW
Alias: CVE-2026-80655
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-28 07:42 UTC by OSIDB Bzimport
Modified: 2026-08-31 08:28 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
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Description OSIDB Bzimport 2026-08-28 07:42:17 UTC
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.


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