CVE-2026-89819

CVE-2026-89819 is a Linux kernel vulnerability in the AMD display driver (drm/amd/display). The per-plane degamma LUT size was never validated before use, unlike the CRTC degamma path which is guarded by amdgpu_dm_verify_lut_sizes(). A malformed AMD_PLANE_DEGAMMA_LUT blob could trigger a divide-b...