{
  "finding_id": "DF-1870",
  "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",
  "confidence": "certain",
  "reproduce": {
    "build": "./build.sh",
    "run": "./run.sh",
    "expected": "harness prints '[OOB READ CONFIRMED] attacker received 1048064 bytes PAST the 512-byte CCB buffer' for the unpatched case and '[REJECTED by bounds check] ... 0 bytes leaked past buffer' for the fixed case"
  },
  "kernel_refs": [
    "sys/dev/disk/iscsi/initiator/iscsi_subr.c:79",
    "sys/dev/disk/iscsi/initiator/iscsi_subr.c:80",
    "sys/dev/disk/iscsi/initiator/iscsi_subr.c:82",
    "sys/dev/disk/iscsi/initiator/iscsi_subr.c:84",
    "sys/dev/disk/iscsi/initiator/iscsi_subr.c:85",
    "sys/dev/disk/iscsi/initiator/iscsi_subr.c:94",
    "sys/dev/disk/iscsi/initiator/iscsi_subr.c:120",
    "sys/dev/disk/iscsi/initiator/iscsi_subr.c:122",
    "sys/dev/disk/iscsi/initiator/iscsi_subr.c:127",
    "sys/dev/disk/iscsi/initiator/isc_soc.c:143",
    "sys/dev/disk/iscsi/initiator/isc_soc.c:164",
    "sys/dev/disk/iscsi/initiator/isc_sm.c:115"
  ],
  "artifacts": [
    {
      "path": "harness.c",
      "type": "trigger-source",
      "desc": "userspace port of iscsi_r2t() proving OOB read + the fix's bounds check"
    },
    {
      "path": "evil_target.py",
      "type": "exploit-chain",
      "desc": "reference (not run in-lab; no Python on guest) malicious iSCSI target sending an over-long R2T"
    },
    {
      "path": "build.sh",
      "type": "build-script",
      "desc": "cc -O2 -Wall -o harness harness.c"
    },
    {
      "path": "run.sh",
      "type": "run-script",
      "desc": "./harness 512 1048576 65536"
    },
    {
      "path": "build.log",
      "type": "build-log",
      "desc": "successful harness build"
    },
    {
      "path": "run.log",
      "type": "run-log",
      "desc": "3 stress runs of the harness (512/4096 x 1MiB/64MiB)"
    },
    {
      "path": "env.txt",
      "type": "environment",
      "desc": "uname, kern.version, cc, iscsi module status, GENERIC config"
    },
    {
      "path": "fix.diff",
      "type": "suggested-fix",
      "desc": "bounds-check bo/ddtl against edtl; supersedes the finding proposal (which referenced bo before declaration)"
    },
    {
      "path": "fix_build.log",
      "type": "build-log",
      "desc": "patched iscsi_initiator.ko compiles cleanly (RC=0); 'bad R2T' string present"
    },
    {
      "path": "fix_run.log",
      "type": "run-log",
      "desc": "Phase 8 before/after contrast: 1048064 bytes OOB -> 0 bytes"
    },
    {
      "path": "VERDICT.md",
      "type": "verdict",
      "desc": "full narrative: mechanism, reachability, leak ceiling, fix validation"
    },
    {
      "path": "README.md",
      "type": "readme",
      "desc": "build/run/expected + how to reproduce"
    },
    {
      "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"
    }
  ]
}