{
  "finding_id": "DF-4487",
  "status": "untested",
  "reproduced": 0,
  "impact": "none",
  "confidence": "certain",
  "verdict": "vo is kmallocd without M_ZERO (acpi_video.c:513) and vo_sysctl_tree is only assigned inside if (acpi_video_sysctl_tree != NULL) (:535-539); when the global node failed to be created (SYSCTL_ADD_NODE failure/OOM at attach, or MOD_UNLOAD NULLing it, :204-205) the unconditional read at :540 uses an uninitialized heap value as struct sysctl_oid* and passes it to SYSCTL_CHILDREN in five SYSCTL_ADD_PROC calls -> garbage-pointer dereference. OOM-gated, Info severity.",
  "exploit_chain": "",
  "evidence": "VERDICT.md (code path)",
  "kernel_refs": [
    "sys/dev/acpica/acpi_video/acpi_video.c:513",
    "sys/dev/acpica/acpi_video/acpi_video.c:535",
    "sys/dev/acpica/acpi_video/acpi_video.c:540"
  ],
  "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": "",
  "run_cmd": "",
  "code_hash": "",
  "notes": "Trigger requires forcing SYSCTL_ADD_NODE failure at attach (memory exhaustion); not deterministic on the guest.",
  "recommended_fix": "kmalloc(..., M_NOWAIT | M_ZERO) in acpi_video_vo_init (or explicitly init vo_sysctl_tree = NULL)",
  "fix_status": "not_testable",
  "fix_baseline_reproduced": 0,
  "fix_patched_reproduced": 0,
  "fix_verdict": "Info-severity hardening; not runtime-tested.",
  "fix_evidence": ""
}