CVE-2026-68272

The CVE-2026-68272 affects the Linux kernel DRM/AMDGPU stack. It introduces a minimum-length validation for the AMDGPU_CHUNK_ID_CP_GFX_SHADOW chunk in amdgpu_cs_pass1(), so undersized chunks (length_dw == 0) are now rejected with -EINVAL before pass2 dereferences data. Previously, a zero-size poi...