{
  "finding_id": "DF-3404",
  "status": "not_reproduced",
  "reproduced": 0,
  "impact": "none",
  "confidence": "certain",
  "verdict": "ieee80211_parse_beacon VENDOR branch (ieee80211_input.c:652-655): the ishtinfooui case assigns frm to scan->htcap instead of scan->htinfo (copy-paste typo; the guard tests scan->htinfo, proving intent). Verified present and characterized: (1) beacons carrying pre-draft vendor HTINFO without standard HTINFO leave scan->htinfo NULL, and every consumer gates on htcap&&htinfo (sta.c:1397-1404/:1701-1705), so the STA associates without 802.11n -- remote unauthenticated feature DoS; (2) with a standard HTINFO also present, scan->htcap points at htinfo bytes and HT-capability negotiation is fed mis-typed data (wrong MCS config) if the vendor IE is padded to pass the >=30-byte length gate at :733-738 -- no OOB (the gate bounds all later reads); (3) a genuine vendor HTCAP seen after a vendor HTINFO is silently dropped. Logic/interop bug, certain; Phase V skipped (Low).",
  "exploit_chain": "",
  "evidence": [
    "findings/poc/DF-3404/README.md"
  ],
  "kernel_refs": [
    "sys/netproto/802_11/wlan/ieee80211_input.c:652",
    "sys/netproto/802_11/wlan/ieee80211_input.c:654",
    "sys/netproto/802_11/wlan/ieee80211_input.c:733",
    "sys/netproto/802_11/wlan/ieee80211_sta.c:1398"
  ],
  "poc_changes": "n/a (Phase V skipped for this Low finding per batch contract)",
  "attempts": 0,
  "guest_uname": "DragonFly dfbsd 6.5-DEVELOPMENT DragonFly 6.5-DEVELOPMENT #0: Thu Jul  2 06:02:54 UTC 2026\troot@dfbsd:/usr/obj/usr/src/sys/X86_64_GENERIC  x86_64",
  "runtime_sec": 0,
  "guest_dirty": 0,
  "build_cmd": "",
  "run_cmd": "",
  "code_hash": "",
  "notes": "This is the cross-file lead recorded by the ieee80211_scan_sta pass-2 audit in task_log 2026-09-11; upstream FreeBSD fixed the same typo years ago",
  "recommended_fix": "Change scan->htcap = frm to scan->htinfo = frm in the ishtinfooui branch (one line)"
}