CVE-2025-68190 drm/amdgpu/atom: Check kcalloc() for WS buffer in amdgpu_atom_execute_table_locked()
A missing check for memory allocation failure in the AMD GPU driver can cause a kernel crash, leading to denial of service.
- 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-2025-68190?
CVE-2025-68190 is a vulnerability in Linux, 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/amdgpu/atom: Check kcalloc() for WS buffer in amdgpu_atom_execute_table_locked()
kcalloc() may fail. When WS is non-zero and allocation fails, ectx.ws remains NULL while ectx.ws_size is set, leading to a potential NULL pointer dereference in atom_get_src_int() when accessing WS entries.
Return -ENOMEM on allocation failure to avoid the NULL dereference.
Which versions are affected by CVE-2025-68190?
How do I fix CVE-2025-68190?
Apply the vendor's patch.
Is CVE-2025-68190 being exploited?
There is no known exploitation of CVE-2025-68190 in the wild and no public exploit code.
Sources
Also known as AZL-72415, BELL-CVE-2025-68190, DEBIAN-CVE-2025-68190, GHSA-ww94-5rwh-3f6g, ROOT-OS-DEBIAN-11-CVE-2025-68190, ROOT-OS-DEBIAN-12-CVE-2025-68190 and 4 more.