{
  "finding_id": "DF-4513",
  "poc_id": "DF-4513",
  "status": "untested",
  "reproduced": 0,
  "impact": "Permanent boot-hang / sticky msghc wedge with no panic or recovery (availability twin of DF-1668s memory corruption)",
  "confidence": "certain",
  "attempts": 0,
  "guest_uname": null,
  "code_hash": null,
  "exploit_chain": [],
  "evidence": "Uninterruptible tsleep(0) in wait_result reached from attach for every protocol version; the same wait later wedges ctx_destroy/kldunload. Bounded-wait + ECOMM fix.",
  "kernel_refs": [
    "sys/dev/virtual/hyperv/vmbus/vmbus.c:522",
    "sys/dev/virtual/hyperv/vmbus/vmbus.c:604",
    "sys/dev/virtual/hyperv/vmbus/vmbus.c:985"
  ],
  "verdict": "not_run: requires a Hyper-V host that withholds VERSION_RESP (untrusted-cloud scenario)",
  "fix_status": "not_testable",
  "fix_baseline_reproduced": 0,
  "fix_patched_reproduced": 0,
  "fix_verdict": "not_testable: Hyper-V/ath hardware absent from guest",
  "fix_evidence": "fix in finding markdown"
}