⬢ DragonFlyBSD Kernel Audit
DF-2854 / manifest.json
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{
  "finding_id": "DF-2854",
  "title": "sysctl_rman (hw.bus.rman) exports partially-initialized stack: r_devname/rm_descr bytes after NUL leak kernel stack incl. kernel pointers to unprivileged readers",
  "verdict": "reproduced",
  "impact": "kernleak (info leak of kernel stack memory)",
  "reproduce": {
    "build": "in guest as any user: cc -O -Wall -o rman_leak rman_leak.c",
    "run": "./rman_leak   (unprivileged)",
    "expected": "99 UNINITIALIZED marks; kernel pointer 0xfffff80117ee5800 in r_devname tails; identical across 3 runs; patched kernel: 0 marks"
  },
  "kernel_refs": [
    "sys/kern/subr_rman.c:653-654",
    "sys/kern/subr_rman.c:684",
    "sys/kern/subr_rman.c:702-722",
    "sys/kern/subr_rman.c:734",
    "sys/kern/subr_bus.c:3892",
    "lib/libdevinfo/devinfo.c:263-345"
  ],
  "artifacts": [
    "rman_leak.c", "run.sh", "run.log", "leak_sample.txt", "env.txt",
    "fix.diff", "VERDICT.md", "verdict.json", "manifest.json",
    "fix_run.log"
  ]
}