CVE-2023-53258 drm/amd/display: Fix possible underflow for displays with large vblank
An integer underflow in the AMD display driver can cause display underflow and potential denial of service on systems with large vblank regions.
- 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-2023-53258?
CVE-2023-53258 is a medium-severity vulnerability in Linux kernel, published on 15 Sep 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 possible underflow for displays with large vblank
[Why] Underflow observed when using a display with a large vblank region and low refresh rate
[How] Simplify calculation of vblank_nom
Increase value for VBlankNomDefaultUS to 800us
Weakness: CWE-191
Which versions are affected by CVE-2023-53258?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2023-53258?
Apply the vendor's patch.
Is CVE-2023-53258 being exploited?
There is no known exploitation of CVE-2023-53258 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2023-53258, DEBIAN-CVE-2023-53258, GHSA-249r-gg7w-pr3p, ROOT-OS-UBUNTU-2204-CVE-2023-53258, UBUNTU-CVE-2023-53258.