Description (CNA)
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)
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected bcb9aa45d5a0e11ef91245330c53cde214d15e8d before 8017a27cec32eac8c8f9430b0a3055840136b856; affected bcb9aa45d5a0e11ef91245330c53cde214d15e8d before 7fb464d52fa41c31a6fd1ad82888e67c65935d94; affected bcb9aa45d5a0e11ef91245330c53cde214d15e8d before 5eefc5307c983b59344a4cb89009819f580c84fa |
| Linux / Linux | affected 6.0; unaffected 0 before 6.0; unaffected 6.1.54 through 6.1.*; unaffected 6.5.4 through 6.5.*; unaffected 6.6 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/8017a27cec32eac8c8f9430b0a3055840136b856
- https://git.kernel.org/stable/c/7fb464d52fa41c31a6fd1ad82888e67c65935d94
- https://git.kernel.org/stable/c/5eefc5307c983b59344a4cb89009819f580c84fa
ADP enrichment
No English description supplied.
No references supplied.