# DF-1948 VERDICT

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

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

**Mechanism:** ath_rate_update L220-248 indexes rt->info[sc_rixmap[rate]] at three sites (series 0/1/2) without checking against rt->rateCount. sc_rixmap initialized 0xff for unmappable rates if_ath.c:6200 memset; r

**Citation:** `sys/dev/netif/ath/ath_rate/onoe/onoe.c:220-248`

**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.