DF-3341 / verdict.json
{ "finding_id": "DF-3341", "status": "reproduced", "reproduced": 1, "poc_path": "findings/poc/DF-3341", "artifact_dir": "findings/poc/DF-3341", "build_cmd": "./build.sh", "run_cmd": "df3341 oob", "code_hash": "d79691b1dddbb781d8615e1e2fd34654e54d62b73609851e89c1aad5f676d1a5", "build_log": "build.log", "run_log": "allruns.log", "impact": "none", "confidence": "certain", "verdict": "parse_beaon TIM IE stored without length verification (input.c:586-589); scan_sta consumer reads tim->tim_period (byte 4) - a TIM IE with declared len < 3 drives the read past the IE end into stale mbuf bytes (DTIM cache). Verbatim chain harness faults the guard page.", "exploit_chain": "", "evidence": "control (len=5) rc=0; len=1 TIM IE rc=139; FIXED length check clean", "kernel_refs": [ "sys/netproto/802_11/wlan/ieee80211_input.c:586-589", "sys/netproto/802_11/wlan/ieee80211_scan_sta.c:348-351", "sys/netproto/802_11/ieee80211.h:952-956" ], "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.diff", "fix_status": "fixed", "fix_verdict": "Harness A/B (fixruns.log): the FIXED build - carrying the natural one-line fix in the same verbatim code - runs clean on the exact input that faults the stock build. Kernel not rebuilt for these Low/hardening items.", "fix_baseline_reproduced": 1, "fix_patched_reproduced": 0 } |