Description
In the Linux kernel, the following vulnerability has been resolved: drm/sched: Increment job count before swapping tail spsc queue A small race exists between spsc_queue_push and the run-job worker, in which spsc_queue_push may return not-first while the run-job worker has already idled due to the job count being zero. If this race occurs, job scheduling stops, leading to hangs while waiting on the job’s DMA fences. Seal this race by incrementing the job count before appending to the SPSC queue. This race was observed on a drm-tip 6.16-rc1 build with the Xe driver in an SVM test case.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
27105db6c63a571b91d01e749d026105a1e63bcf to < 549a9c78c3ea6807d0dc4162a4f5ba59f217d5a0affected27105db6c63a571b91d01e749d026105a1e63bcf to < e62f51d0ec8a9baf324caf9a564f8e318d36a551affected27105db6c63a571b91d01e749d026105a1e63bcf to < ef841f8e4e1ff67817ca899bedc5ebb00847c0a7affected27105db6c63a571b91d01e749d026105a1e63bcf to < f9a4f28a4fc4ee453a92a9abbe36e26224d17749affected27105db6c63a571b91d01e749d026105a1e63bcf to < c64f5310530baf75328292f9b9f3f2961d185183affected27105db6c63a571b91d01e749d026105a1e63bcf to < e2d6547dc8b9b332f9bc00875197287a6a4db65aaffected27105db6c63a571b91d01e749d026105a1e63bcf to < ef58a95457466849fa7b31fd3953801a5af0f58baffected27105db6c63a571b91d01e749d026105a1e63bcf to < 8af39ec5cf2be522c8eb43a3d8005ed59e4daaeeaffected
Linux Linux
Default version status: affected
4.16affected0 to < 4.16unaffected5.4.296 to ≤ 5.4.*unaffected5.10.240 to ≤ 5.10.*unaffected5.15.189 to ≤ 5.15.*unaffected6.1.146 to ≤ 6.1.*unaffected6.6.99 to ≤ 6.6.*unaffected6.12.39 to ≤ 6.12.*unaffected6.15.7 to ≤ 6.15.*unaffected6.16 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/549a9c78c3ea6807d0dc4162a4f5ba59f217d5a0 ↗
- https://git.kernel.org/stable/c/e62f51d0ec8a9baf324caf9a564f8e318d36a551 ↗
- https://git.kernel.org/stable/c/ef841f8e4e1ff67817ca899bedc5ebb00847c0a7 ↗
- https://git.kernel.org/stable/c/f9a4f28a4fc4ee453a92a9abbe36e26224d17749 ↗
- https://git.kernel.org/stable/c/c64f5310530baf75328292f9b9f3f2961d185183 ↗
- https://git.kernel.org/stable/c/e2d6547dc8b9b332f9bc00875197287a6a4db65a ↗
- https://git.kernel.org/stable/c/ef58a95457466849fa7b31fd3953801a5af0f58b ↗
- https://git.kernel.org/stable/c/8af39ec5cf2be522c8eb43a3d8005ed59e4daaee ↗
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html ↗
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html ↗