CVE-2025-68748 drm/panthor: Fix UAF race between device unplug and FW event processing
A race condition in the Panthor GPU driver allows attackers to trigger a use-after-free, potentially leading to code execution or privilege escalation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-68748?
CVE-2025-68748 is a high-severity use after free vulnerability in Linux, published on 24 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/panthor: Fix UAF race between device unplug and FW event processing
The function panthor_fw_unplug() will free the FW memory sections. The problem is that there could still be pending FW events which are yet not handled at this point. process_fw_events_work() can in this case try to access said freed memory.
Simply call disable_work_sync() to both drain and prevent future invocation of process_fw_events_work().
Which versions are affected by CVE-2025-68748?
How do I fix CVE-2025-68748?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2025-68748 being exploited?
There is no known exploitation of CVE-2025-68748 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2025-68748, DEBIAN-CVE-2025-68748, GHSA-wp6p-8vq9-pc32, ROOT-OS-DEBIAN-13-CVE-2025-68748, UBUNTU-CVE-2025-68748.