leviathan
9593d90385
Breaking change. Tool name, binary name, function/type names,
constant names, env vars, header guards, file paths, and GitHub
repo URL all rebrand IAMROOT → SKELETONKEY.
Changes:
- All "IAMROOT" → "SKELETONKEY" (constants, env vars, enum
values, docs, comments)
- All "iamroot" → "skeletonkey" (functions, types, paths, CLI)
- iamroot.c → skeletonkey.c
- modules/*/iamroot_modules.{c,h} → modules/*/skeletonkey_modules.{c,h}
- tools/iamroot-fleet-scan.sh → tools/skeletonkey-fleet-scan.sh
- Binary "iamroot" → "skeletonkey"
- GitHub URL KaraZajac/IAMROOT → KaraZajac/SKELETONKEY
- .gitignore now expects build output named "skeletonkey"
- /tmp/iamroot-* tmpfiles → /tmp/skeletonkey-*
- Env vars IAMROOT_MODPROBE_PATH etc. → SKELETONKEY_*
New ASCII skeleton-key banner (horizontal key icon + ANSI Shadow
SKELETONKEY block letters) replaces the IAMROOT banner in
skeletonkey.c and README.md.
VERSION: 0.3.1 → 0.4.0 (breaking).
Build clean on Debian 6.12.86. `skeletonkey --version` → 0.4.0.
All 24 modules still register; no functional code changes — pure
rename + banner refresh.
1.1 KiB
NOTICE — stackrot (CVE-2023-3269)
Vulnerability
CVE-2023-3269 — Maple-tree VMA-split UAF (race between mremap and fork+fault) → kernel R/W via stale anon_vma_chain reference.
Research credit
Discovered and disclosed by Ruihan Li (Peking University), July 2023.
Original advisory: https://github.com/lrh2000/StackRot Writeup: https://lkmidas.github.io/posts/20230724-stackrot/
Upstream fix: mainline 6.5-rc1 (commit 0503ea8f5ba73, July 2023).
Branch backports: 6.4.4 / 6.3.13 / 6.1.37.
SKELETONKEY role
Two-thread race driver (Thread A: mremap rotation on MAP_GROWSDOWN
anchored VMA; Thread B: fork+fault) with cpu pinning. kmalloc-192
spray for anon_vma_chain reclaim. Bounded budget: 3 s default,
30 s with --full-chain.
Honest reliability assessment: ~<1% race-win per run on a vulnerable kernel. Ruihan Li's public PoC averages minutes-to-hours and needs a much wider VMA-staging matrix to be reliable. The shared finisher's 3 s sentinel timeout handles the overwhelmingly common no-land outcome gracefully — module returns EXPLOIT_FAIL honestly rather than claim root on a race that didn't win.