{
  "finding_id": "DF-5234",
  "status": "untested",
  "verdict": "untested (Info; firmware-triggered, VEGA20 XGMI multi-GPU only)",
  "reproduced": false,
  "impact": "GPU VM faults / device hang from mis-placed apertures (config DoS)",
  "confidence": "certain",
  "exploit_chain": "",
  "evidence": "arithmetic proof from macro types (amdgpu.h:1154-1155) in finding markdown",
  "kernel_refs": [
    "sys/dev/drm/amd/amdgpu/gfxhub_v1_1.c:47",
    "sys/dev/drm/amd/amdgpu/gmc_v9_0.c:776"
  ],
  "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 skipped per contract",
  "recommended_fix": "(u64) cast on the shifted REG_GET_FIELD value",
  "fix_status": "not_testable",
  "fix_baseline_reproduced": 0,
  "fix_patched_reproduced": 0,
  "fix_verdict": "",
  "fix_evidence": ""
}