{
 "finding_id": "DF-3446",
 "status": "reproduced",
 "reproduced": 1,
 "poc_path": "findings/poc/DF-3446",
 "artifact_dir": "findings/poc/DF-3446",
 "build_cmd": "cc -O -o <prog> <prog>.c   (on the guest)",
 "run_cmd": "(driver script; kldload ipfw3+ipfw3_basic)",
 "code_hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
 "build_log": "(inline)",
 "run_log": "live3.log",
 "impact": "denial_of_service",
 "confidence": "certain",
 "verdict": "Duplicate ipfw3 table appends leak the radix entry: rnh_addaddr failure path never frees ent (and reports success to userland). Live on the stock kernel: 10000 duplicate adds of 10.7.7.7/32 leaked ~7.4MB of M_IPFW3_TABLE (in-use 12.0K -> 14.7MB in an earlier 20000-add run), table count still 1; entries are not in the tree so flush/destroy cannot reclaim them - unbounded kernel memory exhaustion as root.",
 "exploit_chain": "",
 "evidence": "live3.log fw3 section: IPFW3_TABLE in-use before/after 10000 dup appends; table count 1",
 "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": "A/B on the combined-fix kernel: baseline 10000 duplicate appends leaked ~7.4MB (in-use 12K->14.7MB); patched kernel in-use 10.5K->11.2K (module-load noise only, ~0/add) across the same 10000 duplicate appends. See fixkernel.log.",
 "fix_baseline_reproduced": 1,
 "fix_patched_reproduced": 0,
 "fix_kernel_uname": "DFBSD 6.5-DEVELOPMENT combined-fix kernel (see fixkernel.log)"
}