{
 "finding_id": "DF-3458",
 "status": "not_reproduced",
 "reproduced": 0,
 "impact": "none",
 "confidence": "certain",
 "verdict": "Line-accurate confirmation; no runtime demonstration attempted (all current callers pass item in {CHANNEL, XCHANNEL} and all in-tree driver masks set only bits <= 19, so the OOB walk is unreachable without driver misuse). radiotap_offset iterates i < IEEE80211_RADIOTAP_EXT (31) but items[] holds ~20 designated entries (ieee80211_radiotap.c:~320-360); any present bit in 20..30 makes items[i] read adjacent rodata and the garbage align/width feed the offset arithmetic (size_t truncation into int off could pass the bounds check with a negative off that callers write through). Fix bounds the walk to nitems(items); compiled in the F40FIX build.",
 "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_radiotap.c:369",
  "sys/netproto/802_11/ieee80211_radiotap.h:212"
 ],
 "poc_changes": "n/a - no reachable caller passes out-of-table bits",
 "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": "skip (return -1) any present-bit item beyond nitems(items)",
 "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)"
}