Bug 2424333 (CVE-2025-68326)

Summary: CVE-2025-68326 kernel: drm/xe/guc: Fix stack_depot usage
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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OS: Linux   
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Description OSIDB Bzimport 2025-12-22 17:01:42 UTC 
In the Linux kernel, the following vulnerability has been resolved:

drm/xe/guc: Fix stack_depot usage

Add missing stack_depot_init() call when CONFIG_DRM_XE_DEBUG_GUC is
enabled to fix the following call stack:

	[] BUG: kernel NULL pointer dereference, address: 0000000000000000
	[] Workqueue:  drm_sched_run_job_work [gpu_sched]
	[] RIP: 0010:stack_depot_save_flags+0x172/0x870
	[] Call Trace:
	[]  <TASK>
	[]  fast_req_track+0x58/0xb0 [xe]

(cherry picked from commit 64fdf496a6929a0a194387d2bb5efaf5da2b542f)
Comment 1 Keith Grant 2025-12-22 18:29:41 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025122217-CVE-2025-68326-4a8f@gregkh/T