CVE-2025-68747 drm/panthor: Fix UAF on kernel BO VA nodes
A use-after-free vulnerability in the Linux kernel Panthor GPU driver allows attackers to potentially execute arbitrary code or escalate privileges.
- 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-2025-68747?
CVE-2025-68747 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 on kernel BO VA nodes
If the MMU is down, panthor_vm_unmap_range() might return an error. We expect the page table to be updated still, and if the MMU is blocked, the rest of the GPU should be blocked too, so no risk of accessing physical memory returned to the system (which the current code doesn't cover for anyway).
Proceed with the rest of the cleanup instead of bailing out and leaving the va_node inserted in the drm_mm, which leads to UAF when other adjacent nodes are removed from the drm_mm tree.
Which versions are affected by CVE-2025-68747?
How do I fix CVE-2025-68747?
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-2025-68747 being exploited?
There is no known exploitation of CVE-2025-68747 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2025-68747, DEBIAN-CVE-2025-68747, GHSA-348v-47hf-22wr, ROOT-OS-DEBIAN-13-CVE-2025-68747, UBUNTU-CVE-2025-68747.