{
  "finding_id": "DF-4804",
  "status": "untested",
  "attempts": 0,
  "reproduced": 0,
  "impact": "dos",
  "confidence": "certain",
  "verdict": "Hardware-gated availability defect: the drivers shutdown method is #if 0d (amdsbwd.c:112-114) and the only kernel-side wdog_disable() fires solely inside panic() under off-by-default WDOG_DISABLE_ON_PANIC - while kern_wdog auto-arms 30s at every attach by default. On AMD SB600/7xx/8xx/FCH hosts any reboot/halt/panic races a 15-30s hardware fuse through POST/loader/dump: long-POST hosts hard-reset mid-reboot and can reset-loop; crash dumps truncate ~15-30s in. No memory-safety impact. Dedicated amdsbwd_shutdown (tmr_disable) fix authored; framework alternative = shutdown_final hook calling wdog_disable after dumps.",
  "exploit_chain": "boot with amdsbwd loaded (auto-armed 30s) -> reboot -> POST+loader exceeds remaining window -> hard reset mid-POST -> possible reset loop; ResetStatus latches Previous Reset was caused by Watchdog",
  "evidence": "findings/poc/DF-4804/ (this verdict)",
  "kernel_refs": [
    "sys/dev/misc/amdsbwd/amdsbwd.c:112-114",
    "sys/dev/misc/amdsbwd/amdsbwd.c:179-189",
    "sys/kern/kern_wdog.c:61-72",
    "sys/kern/kern_shutdown.c:860"
  ],
  "guest_uname": "",
  "code_hash": ""
}