CVE-2023-53258: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.1% chance of exploitation in the next 30 days.

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

Affected products

• Linux Linux Kernel: from 6.0.1, before 6.1.43 (fixed in 6.1.43); from 6.2, before 6.4.8 (fixed in 6.4.8); version 6.0 only

Published 2025-09-15. Last modified 2026-06-17.