 leviathan
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498bb36404
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modules: port 5 detect-only modules to trigger+groom (Option B)
Converts the 5 remaining detect-only network/fs LPE modules to fire
the actual kernel primitive on a vulnerable host, with honest
EXPLOIT_FAIL return values since none ship the per-kernel cred-overwrite
finisher.
af_packet (CVE-2017-7308): +444 LoC — TPACKET_V3 int-overflow
+ skb spray + best-effort cred race
af_packet2 (CVE-2020-14386): +446 LoC — tp_reserve underflow
+ sendmmsg skb spray
cls_route4 (CVE-2022-2588): +410 LoC — route4 dangling-filter UAF
+ msg_msg 1k spray + classify drive
fuse_legacy (CVE-2022-0185): +420 LoC — fsconfig 4k OOB write
+ msg_msg cross-cache groom
nf_tables (CVE-2024-1086): +613 LoC — hand-rolled nfnetlink batch
builder + NFT_GOTO/DROP double-free
+ msg_msg groom skeleton
All five share:
- userns+netns reach (unshare(CLONE_NEWUSER|CLONE_NEWNET))
- Detect-refuse-on-patched re-call from exploit()
- geteuid()==0 short-circuit
- Honest EXPLOIT_FAIL with continuation roadmap comments
- macOS dev-build stubs via #ifdef __linux__ where needed
Build verified clean on Debian 6.12.86 (kctf-mgr). All five refuse on
the patched kernel.
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2026-05-16 21:22:17 -04:00 |
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leviathan
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3ad1446489
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Add cls_route4 CVE-2022-2588 module (detect-only)
11th module. net/sched cls_route4 handle-zero dead UAF — discovered
by kylebot Aug 2022, fixed mainline 5.20 (commit 9efd23297cca).
Bug existed since 2.6.39 → very wide attack surface.
- modules/cls_route4_cve_2022_2588/iamroot_modules.{c,h}:
- kernel_range thresholds: 5.4.213 / 5.10.143 / 5.15.69 / 5.18.18 /
5.19.7 / mainline 5.20+
- can_unshare_userns() probes user_ns+net_ns clone availability
(the exploit's CAP_NET_ADMIN-in-userns gate)
- cls_route4_module_available() checks /proc/modules
- Reports VULNERABLE if kernel in range AND user_ns allowed;
PRECOND_FAIL if user_ns denied; OK if patched.
- Exploit stub returns IAMROOT_PRECOND_FAIL with reference to
kylebot's public PoC.
- Auditd rule: tc-style sendto syscalls (rough; legit traffic
shaping will trip — tune by user).
iamroot.c + Makefile + core/registry.h wired. CVES.md row added.
Verified on kctf-mgr (6.12.86): module reports OK, total module
count = 11.
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2026-05-16 20:33:14 -04:00 |
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