Bug 2425035 (CVE-2025-68749)

Summary:	CVE-2025-68749 kernel: accel/ivpu: Fix race condition when unbinding BOs
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	rhel-process-autobot, watson-tool-maintainers
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	A race condition was found in the Linux kernel's Intel VPU (ivpu) accelerator driver. When unbinding buffer objects (BOs), ivpu_gem_bo_free() can remove a BO from the list before it is fully unmapped. This race causes file_priv_unbind() to trigger a 'Memory manager not clean during takedown' warning in drm_mm_takedown() during context teardown.	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 2025-12-24 13:03:38 UTC

In the Linux kernel, the following vulnerability has been resolved:

accel/ivpu: Fix race condition when unbinding BOs

Fix 'Memory manager not clean during takedown' warning that occurs
when ivpu_gem_bo_free() removes the BO from the BOs list before it
gets unmapped. Then file_priv_unbind() triggers a warning in
drm_mm_takedown() during context teardown.

Protect the unmapping sequence with bo_list_lock to ensure the BO is
always fully unmapped when removed from the list. This ensures the BO
is either fully unmapped at context teardown time or present on the
list and unmapped by file_priv_unbind().

Comment 1 Alexander B 2025-12-25 07:13:43 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025122417-CVE-2025-68749-1160@gregkh/T