{
  "finding_id": "DF-5566",
  "status": "untested",
  "verdict": "untested (inspection-proven MP race; fix validated as part of the DF-5563 spinlock protocol build)",
  "reproduced": false,
  "impact": "double bus acquisition + non-owner bridge release -> external-device wire corruption",
  "confidence": "certain",
  "exploit_chain": "",
  "evidence": "static: crit_enter per-CPU only (iiconf.c:100-108), release-before-validate (iiconf.c:131-140), IICBUS_LOCK no-op (iicbus.h:58-60)",
  "kernel_refs": [
    "sys/bus/iicbus/iiconf.c:100",
    "sys/bus/iicbus/iiconf.c:131",
    "sys/bus/iicbus/iicbus.h:58"
  ],
  "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 hardening; same-spinlock fix as DF-5563",
  "recommended_fix": "spinlock around owner check-and-set; validate owner before IICBUS_CALLBACK; unconditional wakeup",
  "fix_status": "not_testable",
  "fix_baseline_reproduced": 0,
  "fix_patched_reproduced": 0,
  "fix_verdict": "",
  "fix_evidence": ""
}