CVE-2025-38515

Medium

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.

Package Linux Kernel
Published 2025-08-16
Last modified 2026-01-07
CVSS version 3.1
Patch available
Yes

CVSS 3.1 score

4.7

out of 10
Medium
Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
High
Vector string
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected versions

Linux kernel versions 4.16 and later are affected. Fixed in 5.4.296, 5.10.240, 5.15.189, 6.1.146, 6.6.99, 6.12.39, 6.15.7, 6.16 and their respective stable series.

Affected from
≥ 4.16
Fixed in
✓ 5.4.296 5.4.x ✓ 5.10.240 5.10.x ✓ 5.15.189 5.15.x ✓ 6.1.146 6.1.x ✓ 6.6.99 6.6.x ✓ 6.12.39 6.12.x ✓ 6.15.7 6.15.x ✓ 6.16

References

The following references provide additional information about CVE-2025-38515 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

8 patch commits total View all on NVD

Frequently asked questions

  • What is CVE-2025-38515?

    CVE-2025-38515 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.7 out of 10 . It affects Linux kernel versions from 4.16 onward and has been patched in 5.4.296, 5.10.240, 5.15.189 and others. CVE-2025-38515 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2025-38515?

    CVE-2025-38515 has a CVSS score of 4.7 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H .

  • Is there a patch available for CVE-2025-38515?

    Yes — CVE-2025-38515 has been patched. Fixed versions include 5.4.296, 5.10.240, 5.15.189 and others. If you are running Linux kernel 4.16 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2025-38515 actively exploited?

    No — CVE-2025-38515 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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