Bug 2516274 (CVE-2026-72361)

Summary: CVE-2026-72361 kernel: drm/xe/hw_engine: Fix double-free of managed BO in error path
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: medium    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
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Hardware: All   
OS: Linux   
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A flaw was found in the Linux kernel's drm/xe/hw_engine component. An error handling path in the hw_engine_init() function attempts to free a Buffer Object (BO) that is already managed by the device resource management (devm) system. This redundant free operation results in a double-free vulnerability. A local attacker could potentially exploit this to cause memory corruption, leading to a denial of service or possibly arbitrary code execution.
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Description OSIDB Bzimport 2026-08-15 06:03:57 UTC 
In the Linux kernel, the following vulnerability has been resolved:

drm/xe/hw_engine: Fix double-free of managed BO in error path

The error path in hw_engine_init() explicitly frees a BO allocated
with xe_managed_bo_create_pin_map() via xe_bo_unpin_map_no_vm().
Since the managed BO already has a devm cleanup action registered,
this causes a double-free when devm unwinds during probe failure.

Remove the explicit free and let devm handle it, consistent with
all other xe_managed_bo_create_pin_map() callers.

(cherry picked from commit e459a3bdeb117be496d7f229e2ea1f6c9fe4080b)
Comment 1 gkamathe 2026-08-17 15:43:21 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026081514-CVE-2026-72361-8a35@gregkh/T