Files
SKELETONKEY/modules/dirty_cow_cve_2016_5195/NOTICE.md
T
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rename: IAMROOT → SKELETONKEY across the entire project
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.
2026-05-16 22:43:49 -04:00

815 B

NOTICE — dirty_cow (CVE-2016-5195)

Vulnerability

CVE-2016-5195 — Copy-on-write race via /proc/self/mem + madvise → arbitrary file write into the page cache.

Research credit

Discovered by Phil Oester, October 2016. The bug had been latent in the kernel since ~2007.

Original advisory: https://dirtycow.ninja/ Upstream fix: mainline 4.9 (commit 19be0eaffa3a, Oct 2016).

SKELETONKEY role

Two-thread Phil-Oester-style race: writer thread via /proc/self/mem vs. madvise(MADV_DONTNEED) thread. Targets the /etc/passwd UID field flip + su for the root shell. Useful for old systems coverage — RHEL 6/7 (3.10 baseline), Ubuntu 14.04 (3.13), Ubuntu 16.04 (4.4), embedded boxes, IoT.

Ships auditd watch on /proc/self/mem and a sigma rule for non-root mem-open patterns.