DF-4630 / verdict.json
{ "finding_id": "DF-4630", "poc_id": "DF-4630", "status": "untested", "reproduced": 0, "impact": "Storage DoS: each RAID_ACTION on the surviving controller leaks one of 512 request slots until ENOMEM takes down all mpt I/O including disk traffic", "confidence": "likely", "attempts": 0, "guest_uname": null, "code_hash": null, "exploit_chain": [], "evidence": "File-static user_handler_id over a function-deduped GLOBAL handler table: first detach unregisters the handler still used by the survivor - its replies route to the default handler, requests never complete and leak. Refcount-the-registration fix. Cross-file note: mpt_wait_req can TIMEDOUT-mark an already-completed request (permanent leak class).", "kernel_refs": [ "sys/dev/disk/mpt/mpt_user.c:90", "sys/dev/disk/mpt/mpt_user.c:157", "sys/dev/disk/mpt/mpt_user.c:549", "sys/dev/disk/mpt/mpt_user.c:555" ], "verdict": "not_run: no mpt HBA on guest; 2-controller precondition; code path certain", "fix_status": "not_testable", "fix_baseline_reproduced": 0, "fix_patched_reproduced": 0, "fix_verdict": "not_testable: hardware-gated (no Intel DSI panel / no mpt HBA on guest)", "fix_evidence": "fix in finding markdown" } |