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.
1006 B
NOTICE — cgroup_release_agent (CVE-2022-0492)
Vulnerability
CVE-2022-0492 — cgroup v1 release_agent privilege check in the
wrong namespace → host root from a rootless container or unprivileged
userns by mounting cgroup v1 and writing to release_agent.
Research credit
Discovered by Yiqi Sun + Kevin Wang (Trend Micro Research), January 2022.
Original writeup: https://blog.trendmicro.com/cve-2022-0492-from-cgroup-loophole-to-container-breakout/
Upstream fix: mainline 5.17 (commit 24f6008564183, March 2022).
IAMROOT role
Universal structural exploit — no per-kernel offsets, no race.
unshare(USER | MOUNT | CGROUP), mount cgroup v1 RDP controller,
write release_agent → ./payload, trigger via
notify_on_release + cgroup process exit.
Kept in the corpus as a portable "containers misconfigured"
demonstration — works across every kernel below the fix without any
tuning. Ships auditd rules covering cgroupfs mounts and
release_agent writes.