CVE-2023-53077: Linux Kernel

High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: fix shift-out-of-bounds in CalculateVMAndRowBytes [WHY] When PTEBufferSizeInRequests is zero, UBSAN reports the following warning because dml_log2 returns an unexpected negative value: shift exponent 4294966273 is too large for 32-bit type 'int' [HOW] In the case PTEBufferSizeInRequests is zero, skip the dml_log2() and assign the result directly.

Affected products

• Linux Linux Kernel: from 5.9, before 5.10.176 (fixed in 5.10.176); from 5.11, before 5.15.104 (fixed in 5.15.104); from 5.16, before 6.1.21 (fixed in 6.1.21); from 6.2, before 6.2.8 (fixed in 6.2.8)

Published 2025-05-02. Last modified 2026-06-17.