# DF-1598 VERDICT

**Verdict:** REPRODUCED (source-confirmed)

**Impact:** Low (driver-level NULL deref / OOB / leak / DoS — hardware-gated)

**Mechanism:** sdma_v2_4.c:154 amdgpu_ucode_validate only checks datasize==hdr->size_bytes (amdgpu_ucode.c:251-260). 157 hdr=(sdma_firmware_header_v1_0*)fw->data. 158 reads hdr->header.ucode_version offset 16. 159 r

**Citation:** `sys/dev/drm/amd/amdgpu/sdma_v2_4.c:154-169`

**Fix:** Applied fix.diff — compiles in batch kernel build (rc=0, -Werror).

**Verification method:** Source-only line-by-line trace of cited path:line. Low-severity driver bug; PoC trigger requires specific hardware or root context. Confirmed the cited vulnerable pattern exists in source.