{
  "finding_id": "DF-5319",
  "status": "untested",
  "verdict": "untested (Info latent; all in-tree callers clamp nports below the 249 threshold)",
  "reproduced": false,
  "impact": "1-byte device-controlled write past 42-byte stack struct if a caller forwards unclamped bNbrPorts",
  "confidence": "certain",
  "exploit_chain": "",
  "evidence": "static arithmetic trace vs usb.h:617-627",
  "kernel_refs": [
    "sys/bus/u4b/usb_request.c:1507"
  ],
  "poc_changes": "",
  "attempts": 0,
  "guest_uname": "DragonFly dfbsd 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": 0,
  "guest_dirty": 0,
  "build_cmd": "n/a",
  "run_cmd": "n/a",
  "code_hash": "",
  "notes": "Info; Phase V per contract",
  "recommended_fix": "ceil((nports+1)/8) formula + sizeof cap",
  "fix_status": "not_testable",
  "fix_baseline_reproduced": 0,
  "fix_patched_reproduced": 0,
  "fix_verdict": "",
  "fix_evidence": ""
}