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5.5
CVE-2023-53258: Linux Kernel: Display May Freeze with Large Screen Settings
CVE-2023-53258
Summary
A bug in the Linux kernel's display driver could cause a display to freeze or malfunction when using a large screen with a low refresh rate. This bug has been fixed. No action is required from users, as the fix will be included in future kernel updates.
What to do
No fix is available yet. Check with your software vendor for updates.
Affected software
| Vendor | Product | Affected versions |
|---|---|---|
| linux | linux_kernel |
>= 6.0.1, < 6.1.43 >= 6.2, < 6.4.8 6.0 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
Original title
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 lar...
Original 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
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
nvd CVSS3.1
5.5
Vulnerability type
CWE-191
Published: 15 Sep 2025 · Updated: 15 Jun 2026 · First seen: 7 Mar 2026