# DF-1620 VERDICT

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

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

**Mechanism:** mrsas_cam.c:482 req_desc NULL -> return FAIL no mrsas_release_mpt_cmd(cmd). 496 mrsas_build_ldio fail -> return(1) no release. 503 mrsas_build_dcdb fail -> return(1) no release. cmd never returned to 

**Citation:** `sys/dev/raid/mrsas/mrsas_cam.c:481-507`

**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.