DF-4626 / verdict.json
{ "finding_id": "DF-4626", "poc_id": "DF-4626", "status": "untested", "reproduced": 0, "impact": "Kernel crash DoS in the panel-enable path (mode_config mutex held); OOB bytes only steer skip offsets - no direct info disclosure", "confidence": "certain", "attempts": 0, "guest_uname": null, "code_hash": null, "exploit_chain": [], "evidence": "Crafted-VBT walk unbounded until a zero byte: i2c/spi skip sizes (up to 262B) jump arbitrarily far; parse-time walkers partial, v3 sizes explicitly FIXME-unchecked. Distinct from DF-1771 (send_packet len) and DF-4123 (parse overread). Thread-the-end-pointer fix.", "kernel_refs": [ "sys/dev/drm/i915/intel_dsi_vbt.c:444", "sys/dev/drm/i915/intel_dsi_vbt.c:458", "sys/dev/drm/i915/intel_dsi_vbt.c:362", "sys/dev/drm/i915/intel_dsi_vbt.c:369", "sys/dev/drm/i915/intel_dsi_vbt.c:194" ], "verdict": "not_run: no Intel GPU on guest; execution is the last line of defense and has no bound (vbt.dsi.size stored but never consumed)", "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" } |