Bug 2395426 (CVE-2023-53258) - CVE-2023-53258 kernel: drm/amd/display: Fix possible underflow for displays with large vblank
Summary: CVE-2023-53258 kernel: drm/amd/display: Fix possible underflow for displays w...
Keywords:
Status: NEW
Alias: CVE-2023-53258
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-09-15 15:13 UTC by OSIDB Bzimport
Modified: 2025-09-30 10:36 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2025-09-15 15:13:16 UTC 
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
Comment 1 Jon Moroney 2025-09-15 16:39:13 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025091503-CVE-2023-53258-35f0@gregkh/T
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