⬢ DragonFlyBSD Kernel Audit
DF-5110 / verdict.json
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{
  "finding_id": "DF-5110",
  "status": "untested",
  "verdict": "untested (hardware-triggered: SATA PHY flap; no guest-reachable trigger)",
  "reproduced": false,
  "impact": "NULL-deref panic / duplicate disk children",
  "confidence": "likely",
  "exploit_chain": "",
  "evidence": "code-level proof: per-event taskqueue enqueue, absent drain, subr_bus.c:1943-1945 softc free",
  "kernel_refs": [
    "sys/dev/disk/nata/ata-sata.c:45",
    "sys/dev/disk/nata/ata-sata.c:57",
    "sys/dev/disk/nata/ata-sata.c:67",
    "sys/dev/disk/nata/ata-sata.c:110"
  ],
  "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": "Low, hardware-triggered; Phase V skipped per contract",
  "recommended_fix": "softc-NULL guard in the task body + taskqueue drain in channel detach (or single per-channel task with generation counter)",
  "fix_status": "not_testable",
  "fix_baseline_reproduced": 0,
  "fix_patched_reproduced": 0,
  "fix_verdict": "",
  "fix_evidence": ""
}