CVE-2025-68223 drm/radeon: delete radeon_fence_process in is_signaled, no deadlock

What is CVE-2025-68223?

CVE-2025-68223 is a medium-severity vulnerability in Linux kernel, published on 16 Dec 2025. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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)

Weakness: CWE-667

Which versions are affected by CVE-2025-68223?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2025-68223?

Apply the vendor's patch.

Is CVE-2025-68223 being exploited?

There is no known exploitation of CVE-2025-68223 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-72425, AZL-78401, BELL-CVE-2025-68223, DEBIAN-CVE-2025-68223, GHSA-qv7h-6r58-hcx8, ROOT-OS-DEBIAN-11-CVE-2025-68223 and 5 more.