{
 "finding_id": "DF-3274",
 "status": "reproduced",
 "reproduced": 1,
 "poc_path": "findings/poc/DF-3274",
 "artifact_dir": "findings/poc/DF-3274",
 "build_cmd": "./build.sh",
 "run_cmd": "df3274 uaf",
 "code_hash": "82b181090a89e8d55f8a9f343ca54e170c0eff8a87858b84758719c2c90e61ee",
 "build_log": "build.log",
 "run_log": "allruns.log",
 "impact": "none",
 "confidence": "certain",
 "verdict": "UAF read of the freed mbuf pkthdr (obytes accounting, all three sppp send sites); live sppp unreachable on guest (no standalone cloner: ifconfig sppp0 create -> EINVAL), verbatim-code guard-page harness faults deterministically; value feeds only the obytes counter (netstat -i).",
 "exploit_chain": "",
 "evidence": "control (read-before-free order) rc=0; stock order (free-then-read) faults the guard page rc=139; FIXED build clean (fixruns.log DF-3274 FIXED-OK)",
 "kernel_refs": [
  "sys/net/sppp/if_spppsubr.c:1372-1380",
  "sys/net/sppp/if_spppsubr.c:1429-1438",
  "sys/net/sppp/if_spppsubr.c:4672-4681"
 ],
 "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
}