CVE-2026-89821

CVE-2026-89821 affects the Linux kernel DRM AMD display subsystem. The function __is_lut_linear() computes each LUT entry as i * MAX_DRM_LUT_VALUE / (size - 1). When called with a single-entry LUT , the divisor becomes zero, triggering a kernel divide error (#DE) . Since a LUT with fewer than two...

EUVD-2026-80421

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: avoid divide-by-zero in islutlinear islutlinear computes the expected value of each entry with expected = i MAXDRMLUTVALUE / size - 1; If it is ever called with a single-entry LUT, size - 1 is zero and the kernel...