{
  "finding_id": "DF-0744",
  "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",
  "code_hash": "b9a306d0f9e7f73e4c245b4cc038294a3be6c13dd327ab55b89b5a9764a94a47",
  "tested_at": "2026-07-22T18:10:00Z",
  "verdict": "REPRODUCED",
  "impact": "leak:20/iter+state-corruption",
  "confidence": "certain",
  "reproduce": {
    "build": "./build.sh",
    "run": "./run.sh",
    "expected": "kernel memory/pointer leak; see leak_sample.txt / run.log."
  },
  "kernel_refs": [
    "sys/netinet6/udp6_output.c:123",
    "sys/netinet6/udp6_output.c:134-138",
    "sys/netinet6/udp6_output.c:259-267",
    "sys/netinet6/ip6_output.c:2935-3006",
    "sys/netinet6/ip6_output.c:2045-2092",
    "sys/netinet6/raw_ip6.c:301-308",
    "sys/netinet6/raw_ip6.c:436-443"
  ],
  "artifacts": [
    {
      "path": "corrupt.c",
      "type": "trigger-source",
      "desc": "sticky-option corruption demonstrator (set IPV6_PKTINFO, sendmsg with cmsg_len=0, re-read)"
    },
    {
      "path": "leak.c",
      "type": "trigger-source",
      "desc": "tight-loop M_IP6OPT leak (valid IPV6_PKTINFO cmsg + malformed cmsg_len=0)"
    },
    {
      "path": "build.sh",
      "type": "build-script",
      "desc": "cc -O2 -Wall -Wextra -o corrupt/leak"
    },
    {
      "path": "run.sh",
      "type": "run-script",
      "desc": "runs corrupt + leak with vmstat -m ip6opt snapshots"
    },
    {
      "path": "build.log",
      "type": "build-log",
      "desc": "full build output on the guest"
    },
    {
      "path": "run.log",
      "type": "run-log",
      "desc": "decisive run on unpatched #0 kernel \u2014 both bugs reproduced"
    },
    {
      "path": "run.2.log",
      "type": "run-log",
      "desc": "extra corruption run on #0 kernel (determinism)"
    },
    {
      "path": "run.3.log",
      "type": "run-log",
      "desc": "extra corruption run on #0 kernel (determinism)"
    },
    {
      "path": "fix.diff",
      "type": "suggested-fix",
      "desc": "one-line git-apply-able fix: clear &opt not in6p->in6p_outputopts"
    },
    {
      "path": "fix_build.log",
      "type": "build-log",
      "desc": "full single-fix nativekernel build log (rc=0)"
    },
    {
      "path": "fix_run.log",
      "type": "run-log",
      "desc": "decisive run on patched #1 kernel \u2014 both bugs gone"
    },
    {
      "path": "fix_run.2.log",
      "type": "run-log",
      "desc": "extra corruption run on #1 kernel (determinism)"
    },
    {
      "path": "fix_run.3.log",
      "type": "run-log",
      "desc": "extra corruption run on #1 kernel (determinism)"
    },
    {
      "path": "env.txt",
      "type": "environment",
      "desc": "uname, cc version, baseline ip6opt slab"
    },
    {
      "path": "VERDICT.md",
      "type": "verdict",
      "desc": "full narrative + mechanism + before/after"
    },
    {
      "path": "README.md",
      "type": "readme",
      "desc": "human-facing build/run/expected"
    },
    {
      "path": "manifest.json",
      "type": "manifest",
      "desc": "this catalog"
    },
    {
      "path": "fix_apply.log",
      "type": "apply-log",
      "desc": "patch --dry-run output proving fix.diff applies cleanly on with-src"
    },
    {
      "path": "../fix_build_combined.log",
      "type": "build-log",
      "desc": "Combined 41-finding kernel build (rc=0, -Werror clean)"
    },
    {
      "path": "../fix_build_summary.txt",
      "type": "build-summary",
      "desc": "Summary of the combined 41-finding kernel build"
    }
  ]
}