⬢ DragonFlyBSD Kernel Audit
DF-3299 / verdict.json
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{
 "finding_id": "DF-3299",
 "status": "not_reproduced",
 "reproduced": 0,
 "poc_path": "findings/poc/DF-3299",
 "artifact_dir": "findings/poc/DF-3299",
 "build_cmd": "cc -O -o <prog> <prog>.c   (on the guest)",
 "run_cmd": "(none)",
 "code_hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
 "build_log": "(inline)",
 "run_log": "VERDICT.md",
 "impact": "none",
 "confidence": "likely",
 "verdict": "carp_group_demote_adj (ip_carp.c:2765-2781) does an unlocked RMW on ifg_carp_demoted and an unlocked group walk, and carp_send_ad_all runs in the caller context; the cross-CPU callers are pfsync_input (any netisr CPU, if_pfsync.c:985) vs pfsyncioctl (user thread, :1162). The demote counter is not exposed to userspace and pfsync was not configured, so no manifestation could be driven or observed; mechanism line-confirmed only (NOTES.md folded in).",
 "exploit_chain": "",
 "evidence": "NOTES.md (prior static analysis) + ip_carp.c:2765-2781 excerpt in VERDICT.md",
 "kernel_refs": [
  "sys/netinet/ip_carp.c:2765-2781",
  "sys/net/pf/if_pfsync.c:985",
  "sys/net/pf/if_pfsync.c:1162"
 ],
 "poc_changes": "",
 "attempts": 3,
 "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": 60,
 "guest_dirty": 0,
 "runner": "df-bsd-reviewer",
 "notes": "",
 "recommended_fix": "",
 "fix_status": "not_testable",
 "fix_verdict": "Fix: netisr0-dispatch carp_group_demote_adj/carp_send_ad_all + token-protected group walk; needs a pfsync rig to A/B.",
 "fix_baseline_reproduced": null,
 "fix_patched_reproduced": null
}