DF-2749 / verdict.json
{ "finding_id": "DF-2749", "status": "reproduced", "reproduced": 1, "impact": null, "confidence": "certain", "verdict": "source-confirmed (no runtime PoC; deterministic code trace of the cited path:line in the read-only sys/ tree). Code-certain accounting bug (bytessent/journal stats only); no runtime rig (mounting a journal requires the mountctl setup outside this Info batch budget). fix.diff counts the pad size once and stops the inner double-add.", "exploit_chain": "no escalation path (Info-tier hardening; see VERDICT.md)", "evidence": "VERDICT.md mechanism/verdict sections; fix.diff", "kernel_refs": [ "sys/kern/vfs_journal.c:220", "sys/kern/vfs_journal.c:221" ], "poc_changes": "none (source-only confirmation for this Info-tier item)", "attempts": 1, "guest_uname": "DragonFly dfbsd 6.5-DEVELOPMENT #0: Thu Jul 2 06:02:54 UTC 2026 root@dfbsd:/usr/obj/usr/src/sys/X86_64_GENERIC x86_64", "runtime_sec": 0, "guest_dirty": 0, "build_cmd": "n/a (source-only confirmation)", "run_cmd": "n/a", "code_hash": "1df90559c2c49a54dca7fd7f3f3a572def9b48dcd52b700e6ec7774132e5cfcc", "notes": "Status semantics: source-confirmed rows follow the established Info-tier batch convention (deterministic code trace of the cited path:line); HW-gated rows are not_reproduced because the required device is absent on this QEMU guest.", "recommended_fix": "total_acked += (rawp->recsize + 15) & ~15 once; drop the inner increment (keep the xindex advance).", "fix_status": "not_testable", "fix_kernel_uname": null, "fix_baseline_reproduced": null, "fix_patched_reproduced": null, "fix_verdict": "fix.diff compile-validated in the batch combined kernel build (all 37 diffs of this batch applied to in-guest /usr/src; make -j6 nativekernel KERNCONF=X86_64_GENERIC, see batch build log referenced in VERDICT.md); no behavior A/B performed for this Info-tier item; behavior A/B intentionally skipped for Info tier", "fix_evidence": "batch combined kernel build log (see findings/poc/_batch41 note in VERDICT.md)" } |