CVE-2023-53258

kernel: drm/amd/display: Fix possible underflow for displays with large vblank

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Severity

Moderate

Red Hat Product Security

5.3

CVSS 3.1

Review impact separately from score.

Published · September 15, 2025

Updated · June 30, 2026

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

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 5.3
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H

CWE-191 · Integer Underflow (Wrap or Wraparound)