In the Linux kernel, the following vulnerability has been resolved:
drm/i915: mark requests for GuC virtual engines to avoid use-after-free
References to i915_requests may be trapped by userspace inside a
sync_file or dmabuf (dma-resv) and held indefinitely across different
proceses. To counter-act the memory leaks, we try to not to keep
references from the request past their completion.
On the other side on fence release we need to know if rq->engine
is valid and points to hw engine (true for non-virtual requests).
To make it possible extra bit has been added to rq->execution_mask,
for marking virtual engines.
(cherry picked from commit 280410677af763f3871b93e794a199cfcf6fb580)
Metrics
Affected Vendors & Products
References
History
Sat, 04 Oct 2025 15:30:00 +0000
Type | Values Removed | Values Added |
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Description | In the Linux kernel, the following vulnerability has been resolved: drm/i915: mark requests for GuC virtual engines to avoid use-after-free References to i915_requests may be trapped by userspace inside a sync_file or dmabuf (dma-resv) and held indefinitely across different proceses. To counter-act the memory leaks, we try to not to keep references from the request past their completion. On the other side on fence release we need to know if rq->engine is valid and points to hw engine (true for non-virtual requests). To make it possible extra bit has been added to rq->execution_mask, for marking virtual engines. (cherry picked from commit 280410677af763f3871b93e794a199cfcf6fb580) | |
Title | drm/i915: mark requests for GuC virtual engines to avoid use-after-free | |
References |
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Status: PUBLISHED
Assigner: Linux
Published:
Updated: 2025-10-04T15:16:58.429Z
Reserved: 2025-10-04T15:14:15.922Z
Link: CVE-2023-53552

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Status : Received
Published: 2025-10-04T16:15:50.480
Modified: 2025-10-04T16:15:50.480
Link: CVE-2023-53552

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