{
  "finding_id": "DF-3396",
  "status": "build_failed",
  "reproduced": 0,
  "impact": "none",
  "confidence": "likely",
  "verdict": "Latent (analysis-verified): netmap_mem_rings_creates cleanup path (netmap_mem2.c:987) frees ring objects but leaks every already-allocated packet buffer referenced by those rings slots, unlike netmap_mem_rings_delete (:1005-1011) which frees slot buffers first; repeated failing ring creations drain the global buffer pool to permanent ENOMEM. PoC impossible on this tree: the netmap module itself does not compile (ifnet if_unused7 mismatch, netmap_build.log, EXIT=1).",
  "exploit_chain": "",
  "evidence": [
    "VERDICT.md \u2014 cleanup-vs-delete asymmetry at netmap_mem2.c:987 vs :1005-1011",
    "netmap_build.log \u2014 module build failure on this tree (15 errors)"
  ],
  "kernel_refs": [
    "sys/net/netmap/netmap_mem2.c:987",
    "sys/net/netmap/netmap_mem2.c:892",
    "sys/net/netmap/netmap_mem2.c:1005",
    "sys/net/netmap/netmap_mem2.c:1011"
  ],
  "poc_changes": "No executable PoC possible; analysis-only finding with concrete build-failure evidence.",
  "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": 95,
  "guest_dirty": 1,
  "build_cmd": "cd /usr/src/sys/net/netmap && make",
  "run_cmd": "n/a",
  "code_hash": "",
  "notes": "Same latent status as pass-1 DF-0546..DF-0550 (module predates current ifnet layout). Guest left with /tmp build artifacts only.",
  "recommended_fix": "In the cleanup path, free each allocated rings slot buffers (netmap_free_buf) before netmap_free_rings, mirroring netmap_mem_rings_delete.",
  "fix_status": "build_blocked",
  "fix_kernel_uname": "",
  "fix_baseline_reproduced": 0,
  "fix_patched_reproduced": 0,
  "fix_verdict": "fix.diff authored; cannot be built/validated because the netmap module itself does not compile on this tree.",
  "fix_evidence": "fix.diff"
}