⬢ DragonFlyBSD Kernel Audit
DF-3445 / verdict.json
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{
 "finding_id": "DF-3445",
 "status": "reproduced",
 "reproduced": 1,
 "poc_path": "findings/poc/DF-3445",
 "artifact_dir": "findings/poc/DF-3445",
 "build_cmd": "./build.sh",
 "run_cmd": "(no arg)",
 "code_hash": "eb208947c8fd85fe8fc35bc627eadb7edea75aa0b7900c76f0c7cc6f04fe815f",
 "build_log": "build.log",
 "run_log": "allruns.log",
 "impact": "denial_of_service",
 "confidence": "certain",
 "verdict": "table_append_dispatch returns without forwarding or replying its netmsg when the M_NOWAIT kmalloc fails (ip_fw3_table.c:168-170), so the dispatcher blocks forever in lwkt_waitmsg on netisr0 and all kernel networking wedges permanently. Logic harness over the verbatim control flow with a failing kmalloc: dispatched=2, forwarded=1 - the second message is stranded.",
 "exploit_chain": "",
 "evidence": "misc3.log DF-3445: [fault] dispatched=2 forwarded=1 replied=0 (message stranded)",
 "kernel_refs": [
  "sys/net/ipfw3_basic/ip_fw3_table.c:157-186"
 ],
 "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": "The combined-fix kernel replaces the bare return with goto done (netmsg always forwarded); the same 10000-append stress completes with networking fully live on the patched kernel (no wedge), and the harness logic proof (misc3.log) shows the strand deterministically.",
 "fix_baseline_reproduced": 1,
 "fix_patched_reproduced": 0,
 "fix_kernel_uname": "DFBSD 6.5-DEVELOPMENT combined-fix kernel (see fixkernel.log)"
}