CVE-2023-53780 drm/amd/display: fix FCLK pstate change underflow
A flaw in the Linux kernel's AMD display driver causes display underflows, potentially leading to system instability or denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-53780?
CVE-2023-53780 is a 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/amd/display: fix FCLK pstate change underflow
[Why] Currently we set FCLK p-state change watermark calculated based on dummy p-state latency when UCLK p-state is not supported
[How] Calculate FCLK p-state change watermark based on on FCLK pstate change latency in case UCLK p-state is not supported
Which versions are affected by CVE-2023-53780?
How do I fix CVE-2023-53780?
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-2023-53780 being exploited?
There is no known exploitation of CVE-2023-53780 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2023-53780, DEBIAN-CVE-2023-53780, GHSA-m676-9m54-m6j5, ROOT-OS-DEBIAN-11-CVE-2023-53780, ROOT-OS-UBUNTU-2204-CVE-2023-53780, UBUNTU-CVE-2023-53780.