CVE-2025-38515
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…
Does this matter?
Lower severity and a low EPSS score (0.16%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 4.7 MEDIUMCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.16% probability · 5th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- linux/linux kernel · debian/debian linux
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
EPSS 0.2% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://git.kernel.org/stable/c/549a9c78c3ea6807d0dc4162a4f5ba59f217d5a0Patch
- https://git.kernel.org/stable/c/8af39ec5cf2be522c8eb43a3d8005ed59e4daaeePatch
- https://git.kernel.org/stable/c/c64f5310530baf75328292f9b9f3f2961d185183Patch
- https://git.kernel.org/stable/c/e2d6547dc8b9b332f9bc00875197287a6a4db65aPatch
- https://git.kernel.org/stable/c/e62f51d0ec8a9baf324caf9a564f8e318d36a551Patch
- https://git.kernel.org/stable/c/ef58a95457466849fa7b31fd3953801a5af0f58bPatch
- https://git.kernel.org/stable/c/ef841f8e4e1ff67817ca899bedc5ebb00847c0a7Patch
- https://git.kernel.org/stable/c/f9a4f28a4fc4ee453a92a9abbe36e26224d17749Patch
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlMailing List, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.