# DF-1886 VERDICT

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

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

**Mechanism:** parityrebuild L367 stripe=pstripe/plex->stripesize L368 psd=plex->subdisks-1-stripe%plex->subdisks both integer divisions. Sole caller parityops L265 checks only isparity(plex) (organization>=plex_rai

**Citation:** `sys/dev/raid/vinum/vinumrevive.c:116-382`

**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.