{
 "finding_id": "DF-3374",
 "status": "reproduced",
 "reproduced": 1,
 "poc_path": "findings/poc/DF-3374",
 "artifact_dir": "findings/poc/DF-3374",
 "build_cmd": "./build.sh",
 "run_cmd": "df3374 1",
 "code_hash": "9e47639e36b1060937f4de3d93695044356c84d840bb4108aab175be03ff36ec",
 "build_log": "build.log",
 "run_log": "allruns.log",
 "impact": "none",
 "confidence": "certain",
 "verdict": "ieee80211_parse_csaparams consumes csa_mode/csa_newchan/csa_count with no frm[1] validation (caller passes scan.csa straight from the beacon walk). Verbatim harness: CSA IE len=1 and len=2 both fault the guard page - the channel-switch decision is driven by stale mbuf bytes.",
 "exploit_chain": "",
 "evidence": "cases 1,2 rc=139; control (len=3) rc=0; FIXED length check clean",
 "kernel_refs": [
  "sys/netproto/802_11/wlan/ieee80211_sta.c:1146-1200",
  "sys/netproto/802_11/wlan/ieee80211_sta.c:1472",
  "sys/netproto/802_11/ieee80211.h:1063-1069",
  "sys/netproto/802_11/wlan/ieee80211_input.c:565"
 ],
 "poc_changes": "",
 "attempts": 3,
 "guest_uname": "DragonFly dfbsd 6.5-DEVELOPMENT DragonFly 6.5-DEVELOPMENT #0: Thu Jul  2 06:02:54 UTC 2026  root@dfbsd:/usr/obj/usr/src/sys/X86_64_GENERIC  x86_64",
 "runtime_sec": 60,
 "guest_dirty": 0,
 "runner": "df-bsd-reviewer",
 "notes": "",
 "recommended_fix": "fix.diff",
 "fix_status": "fixed",
 "fix_verdict": "Harness A/B (fixruns.log): the FIXED build - carrying the natural one-line fix in the same verbatim code - runs clean on the exact input that faults the stock build. Kernel not rebuilt for these Low/hardening items.",
 "fix_baseline_reproduced": 1,
 "fix_patched_reproduced": 0
}