Bug 2365246 (CVE-2025-37869)

Summary: CVE-2025-37869 kernel: drm/xe: Use local fence in error path of xe_migrate_clear
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: ---
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2025-05-09 07:01:30 UTC 
In the Linux kernel, the following vulnerability has been resolved:

drm/xe: Use local fence in error path of xe_migrate_clear

The intent of the error path in xe_migrate_clear is to wait on locally
generated fence and then return. The code is waiting on m->fence which
could be the local fence but this is only stable under the job mutex
leading to a possible UAF. Fix code to wait on local fence.

(cherry picked from commit 762b7e95362170b3e13a8704f38d5e47eca4ba74)
Comment 1 Michal Findra 2025-05-09 09:17:24 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025050958-CVE-2025-37869-09b8@gregkh/T