{
 "finding_id": "DF-2665",
 "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). Cross-reference item (upstream-owned): version identity confirmed against the r97-era source layout. DragonFly wraps every decompress call with a strict output-size bound (hammer2_lz4.c LZ4_decompress_safe into caller-sized buffers, comp block header caps), so the known r97 decoder overread classes are contained by the wrapper bounds; the real fix is syncing the vendored file to current upstream lz4 (r1.9.x+) - out of scope for a one-off fix.diff, so this pack carries a documented recommendation only, per the contrib/vendored policy.",
 "exploit_chain": "no escalation path (Info-tier hardening; see VERDICT.md)",
 "evidence": "VERDICT.md mechanism/verdict sections; fix.diff",
 "kernel_refs": [
  "sys/vfs/hammer2/hammer2_lz4.c:372",
  "sys/vfs/hammer2/hammer2_lz4.c:517"
 ],
 "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": null,
 "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": "Documented recommendation (no fix.diff): sync sys/vfs/hammer2/hammer2_lz4.c to current upstream LZ4 (upstream-owned history).",
 "fix_status": "not_testable",
 "fix_kernel_uname": null,
 "fix_baseline_reproduced": null,
 "fix_patched_reproduced": null,
 "fix_verdict": "No fix.diff (documented recommendation in VERDICT.md): Documented recommendation (no fix.diff): sync sys/vfs/hammer2/hammer2_lz4.c to current upstream LZ4 (upstream-owned history).",
 "fix_evidence": "n/a (recommendation item)"
}