{
  "finding_id": "DF-4586",
  "poc_id": "DF-4586",
  "status": "untested",
  "reproduced": 0,
  "impact": "None in shipped config (all stale-pointer derefs compiled out; unpriv creates fail, root objects inert); becomes a genuine UAF/wrong-mm registration when the notifier path is ever enabled",
  "confidence": "certain",
  "attempts": 0,
  "guest_uname": null,
  "code_hash": null,
  "exploit_chain": [],
  "evidence": "mmgrab increments the shims mm_count which nothing ever reads (lifetime is mm->refs); the wrapper dangles after process exit and the hash keys by the recyclable pointer. Make-mmgrab-real (refs) or key-by-proc fix.",
  "kernel_refs": [
    "sys/dev/drm/i915/i915_gem_userptr.c:323",
    "sys/dev/drm/i915/i915_gem_userptr.c:364",
    "sys/dev/drm/i915/i915_gem_userptr.c:365",
    "sys/dev/drm/i915/i915_gem_userptr.c:386"
  ],
  "verdict": "not_run: latent-only; CONFIG_MMU_NOTIFIER undefined tree-wide so every deref is compiled out",
  "fix_status": "not_testable",
  "fix_baseline_reproduced": 0,
  "fix_patched_reproduced": 0,
  "fix_verdict": "not_testable: hardware absent / latent",
  "fix_evidence": "fix in finding markdown"
}