CVE-2026-89978

CVE-2026-89978 affects the Linux kernel accel/amdxdna driver (AMD NPU). The SYNC_BO ioctl does not validate that the requested size is non-zero, so a zero-byte request reaches drm_clflush_virt_range(), which unconditionally calls clflushopt(end - 1). For an empty range this dereferences the guard...