What’s Vulnerable › Vulnerabilities

CVE-2023-53258: drm/amd/display: Fix possible underflow for displays with large vblank

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-09-15 · updated 2026-06-17
• Weakness: CWE-191

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

Affected products

• Linux kernel: from 6.0.1 before 6.1.43; from 6.2 before 6.4.8; 6.0, 6.0-rc2, 6.0-rc3, 6.0-rc4, 6.0-rc5, 6.0-rc6 (+1) — fixed in 6.1.43, 6.4.8

How to fix

Upgrade to a fixed version: Linux kernel 6.1.43, 6.4.8. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/1a4bcdbea4319efeb26cc4b05be859a7867e02dc
• https://git.kernel.org/stable/c/64bc8e10c87adf60b2d32aacf3afb288e51d5a62
• https://git.kernel.org/stable/c/d5741133e6e2f304b40ca1da0e16f62af06f4d22

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