⬢ DragonFlyBSD Kernel Audit
DF-3116 / manifest.json
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{
  "finding": "DF-3116",
  "title": "msdosfs_rename() stale de_fndoffset/de_fndcnt TOCTOU: createde() overwrites concurrently-created dirent",
  "verdict": "not_reproduced",
  "impact": "none",
  "confidence": "likely",
  "reproduce": {
    "build": "sh build.sh",
    "run": "sh run.sh (root); sh wedge.sh (root, attribution-clean)",
    "expected": "Race interference reaches the kernel (kern_rename retry logged); dirent theft itself not observed in 10 runs; racing wedges the system (DF-3117)"
  },
  "kernel_refs": [
    "sys/vfs/msdosfs/msdosfs_lookup.c:367-400",
    "sys/vfs/msdosfs/msdosfs_lookup.c:611-646",
    "sys/vfs/msdosfs/msdosfs_vnops.c:1009-1010",
    "sys/vfs/msdosfs/msdosfs_vnops.c:1045",
    "sys/vfs/msdosfs/msdosfs_vnops.c:1127-1128",
    "sys/vfs/msdosfs/msdosfs_vnops.c:1186-1188",
    "sys/kern/vfs_default.c:953-1062",
    "sys/kern/vfs_default.c:312-378"
  ],
  "artifacts": [
    "trigger.c", "build.sh", "run.sh", "wedge.sh", "fix.diff",
    "build.log", "run.3.log", "run.5.log", "run.9.log", "run.10.wedge.log",
    "README.md", "VERDICT.md", "verdict.json", "manifest.json"
  ]
}