{
 "finding_id": "DF-3285",
 "status": "not_reproduced",
 "reproduced": 0,
 "impact": "none",
 "confidence": "certain",
 "verdict": "Line-accurate confirmation; runtime demonstration not possible on this guest (requires an 11h DFS-capable AP VAP with quiet enabled after beacon construction; QEMU has no 802.11 radio). beacon_construct records bo->bo_quiet=frm and only writes an 8-byte Quiet IE when iv_quiet was set at construct time (ieee80211_output.c:3173-3180); beacon_update unconditionally calls ieee80211_add_quiet(bo->bo_quiet, vap) once iv_quiet is enabled (:3574-3575) - an in-bounds write over the first bytes of the ERP/xrates/RSN region that corrupts the transmitted beacon IE chain. Fix tracks Quiet-IE presence (bo_quiet_set) and skips the update write when absent; compiled in the F40FIX build (wlan in kernel).",
 "exploit_chain": "",
 "evidence": "VERDICT.md with path:line citations; run.log where a live demo exists; fix.diff",
 "kernel_refs": [
  "sys/netproto/802_11/wlan/ieee80211_output.c:3173",
  "sys/netproto/802_11/wlan/ieee80211_output.c:3574"
 ],
 "poc_changes": "n/a - no 802.11 radio on this guest",
 "attempts": 0,
 "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": 30,
 "guest_dirty": 0,
 "build_cmd": "see build.sh",
 "run_cmd": "see run.sh",
 "code_hash": null,
 "notes": "",
 "recommended_fix": "track Quiet-IE construction (bo_quiet_set); update only in place when built",
 "fix_status": "compile_validated",
 "fix_verdict": "fix.diff applied in the F40FIX verification kernel build (RC=0, zero -Werror errors); no runtime A/B for this item (line-certain hardening)"
}