DF-4523 / verdict.json
{ "finding_id": "DF-4523", "poc_id": "DF-4523", "status": "untested", "reproduced": 0, "impact": "One IB SA-bo + fence leaked from the fixed-size shared pool per unrecovered reset cycle - progressive pool exhaustion = persistent GPU-accel DoS", "confidence": "certain", "attempts": 0, "guest_uname": null, "code_hash": null, "exploit_chain": [], "evidence": "Both fence-wait early exits skip radeon_ib_free while every other exit performs it. Unpriv GPU client wedges SDMA -> reset cycles -> leak per cycle. Free-on-both-exits fix.", "kernel_refs": [ "sys/dev/drm/radeon/cik_sdma.c:738", "sys/dev/drm/radeon/cik_sdma.c:746" ], "verdict": "not_run: no CIK radeon hardware on guest; ib_test runs at init/resume/after every GPU reset", "fix_status": "not_testable", "fix_baseline_reproduced": 0, "fix_patched_reproduced": 0, "fix_verdict": "not_testable: no AMD GPU on guest", "fix_evidence": "fix in finding markdown" } |