{
  "finding_id": "DF-4517",
  "poc_id": "DF-4517",
  "status": "untested",
  "reproduced": 0,
  "impact": "Exported PRIME fds stay open across execve, contradicting the API contract Mesa/libdrm rely on; combined with DF-4429 (missing radeon verify_access) widens cross-user GPU buffer access",
  "confidence": "certain",
  "attempts": 0,
  "guest_uname": null,
  "code_hash": null,
  "exploit_chain": [],
  "evidence": "dma_buf_fd has O_CLOEXEC compiled out (XXX) and calls fdalloc with flags=0 while the ioctls validate and forward DRM_CLOEXEC. Set-UF_EXCLOSE fix in finding markdown.",
  "kernel_refs": [
    "sys/dev/drm/drm_prime.c:669",
    "sys/dev/drm/drm_prime.c:881"
  ],
  "verdict": "not_run: no DRM device on guest",
  "fix_status": "not_testable",
  "fix_baseline_reproduced": 0,
  "fix_patched_reproduced": 0,
  "fix_verdict": "not_testable: no DRM device / vkernel disproportion",
  "fix_evidence": "fix in finding markdown"
}