# CVE-2025-37930: drm/nouveau: Fix WARN\_ON in nouveau\_fence\_context\_kill()

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2025-05-20 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 5.6

## Description

In the Linux kernel, the following vulnerability has been resolved: drm/nouveau: Fix WARN_ON in nouveau_fence_context_kill() Nouveau is mostly designed in a way that it's expected that fences only ever get signaled through nouveau_fence_signal(). However, in at least one other place, nouveau_fence_done(), can signal fences, too. If that happens (race) a signaled fence remains in the pending list for a while, until it gets removed by nouveau_fence_update(). Should nouveau_fence_context_kill() run in the meantime, this would be a bug because the function would attempt to set an error code on an already signaled fence. Have nouveau_fence_context_kill() check for a fence being signaled.

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory per the references below.
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## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/39d6e889c0b19a2c79e1c74c843ea7c2d0f99c28
- https://git.kernel.org/stable/c/2ec0f5f6d4768f292c8406ed92fa699f184577e5
- https://git.kernel.org/stable/c/47ca11836c35c5698088fd87f7fb4b0ffa217e17
- https://git.kernel.org/stable/c/126f5c6e0cb84e5c6f7a3a856d799d85668fb38e
- https://git.kernel.org/stable/c/b771b2017260ffc3a8d4e81266619649bffcb242
- https://git.kernel.org/stable/c/0453825167ecc816ec15c736e52316f69db0deb9
- https://git.kernel.org/stable/c/bbe5679f30d7690a9b6838a583b9690ea73fe0e9

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Page: https://cve.now/CVE-2025-37930
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