leviathan
9d88b475c1
The README has been claiming "each module credits the original CVE
reporter and PoC author in its NOTICE.md" since v0.1.0, but only
copy_fail_family actually shipped one. Fixed.
modules/<name>/NOTICE.md (×19 new + 1 existing): per-module
research credit covering CVE ID, discoverer, original advisory
URL where public, upstream fix commit, IAMROOT's role.
iamroot.c: new --dump-offsets subcommand. Resolves kernel offsets
via the existing core/offsets.c four-source chain (env →
/proc/kallsyms → /boot/System.map → embedded table), then emits
a ready-to-paste C struct entry for kernel_table[]. Run once
as root on a target kernel build; upstream via PR. Eliminates
fabricating offsets — every shipped entry traces back to a
`iamroot --dump-offsets` invocation on a real kernel.
docs/OFFSETS.md: documents the --dump-offsets workflow.
CVES.md: notes the NOTICE.md convention + offset dump tool.
iamroot.c: bump IAMROOT_VERSION 0.3.0 → 0.3.1.
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.
IAMROOT 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.