{
 "finding_id": "DF-3185",
 "status": "not_reproduced",
 "reproduced": 0,
 "impact": "none",
 "confidence": "certain",
 "verdict": "Line-accurate confirmation; no runtime demonstration attempted (the defect is a boolean oracle with no byte disclosure - practical effect equals invoking the control op). procfs_subr.c:496 compares buflen+1 bytes against nm->nm_name; with an embedded NUL in the /proc/<pid>/ctl string (permitted by vfs_getuserstr) the bcmp reads past the rodata entrys NUL into adjacent .rodata. FreeBSD-parity code. Fix bounds the comparison to strlen(nm_name) == buflen + content equality; compiled in the F40FIX build (procfs in kernel).",
 "exploit_chain": "",
 "evidence": "VERDICT.md with path:line citations; run.log where a live demo exists; fix.diff",
 "kernel_refs": [
  "sys/vfs/procfs/procfs_subr.c:496"
 ],
 "poc_changes": "n/a - oracle-only, no observable output",
 "attempts": 0,
 "guest_uname": "DragonFly dfbsd 6.5-DEVELOPMENT DragonFly 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": 30,
 "guest_dirty": 0,
 "build_cmd": "see build.sh",
 "run_cmd": "see run.sh",
 "code_hash": null,
 "notes": "",
 "recommended_fix": "require strlen(nm_name)==buflen and compare buflen bytes",
 "fix_status": "compile_validated",
 "fix_verdict": "fix.diff applied in the F40FIX verification kernel build (RC=0, zero -Werror errors); no runtime A/B for this item (line-certain hardening)"
}