CVE-2023-53844 drm/ttm: Don't leak a resource on swapout move error
A resource leak in the Linux kernel's TTM subsystem during swapout errors can lead to memory exhaustion and 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-2023-53844?
CVE-2023-53844 is a high-severity denial of service vulnerability in Linux, published on 9 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/ttm: Don't leak a resource on swapout move error
If moving the bo to system for swapout failed, we were leaking a resource. Fix.
Which versions are affected by CVE-2023-53844?
How do I fix CVE-2023-53844?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2023-53844 being exploited?
There is no known exploitation of CVE-2023-53844 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2023-53844, DEBIAN-CVE-2023-53844, GHSA-3hfx-6pff-gwfw, UBUNTU-CVE-2023-53844.