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

References

• https://nvd.nist.gov/vuln/detail/CVE-2023-53258
• https://git.kernel.org/stable/c/1a4bcdbea4319efeb26cc4b05be859a7867e02dc
• https://git.kernel.org/stable/c/64bc8e10c87adf60b2d32aacf3afb288e51d5a62
• https://git.kernel.org/stable/c/d5741133e6e2f304b40ca1da0e16f62af06f4d22