Red Specter SPECTER KERNEL — Kernel-Layer AI Governance Subversion

The Problem

Kernel-Layer Governance Is the Last Line. It Is Not Safe.

AI agent security frameworks increasingly rely on kernel-level enforcement: eBPF-based syscall monitoring, BPF-LSM security policies, namespace sandboxing, and cryptographically signed audit ledgers. These mechanisms are marketed as tamper-proof. SPECTER KERNEL is the world's first tool that systematically dismantles every one of them — proving that an attacker who can load an eBPF program can defeat AI governance at the kernel layer without ever touching the governance framework itself.

Vector 01

eBPF Syscall Argument Rewriting

A BPF tracepoint program intercepts syscall entry and rewrites arguments before the kernel processes them. The monitor records the rewritten arguments. The agent performs the original action. The audit log shows a lie.

openat rewrite execve masquerade connect spoof ptrace bypass

Vector 02

BPF-LSM Hook Ordering Attack

Linux loads LSM hooks in registration order. When BPF-LSM is loaded after AppArmor, attacker BPF hooks execute after the defender's AppArmor rules — and can return ALLOW unconditionally for every hook AppArmor would have blocked.

file_open override bprm_check bypass socket_connect allow LSM stack abuse

Vector 03

Namespace Escape & FD Inheritance

Container and namespace boundaries are only as strong as the enforcement at exec boundaries. File descriptors without O_CLOEXEC are inherited across execve — an agent subprocess can read and write file descriptors that should be inaccessible in its sandbox.

pid ns escape fd cloexec gap cgroup release agent docker.sock escalation

Vector 04

Hash-Chain Ledger Poisoning

Cryptographic audit ledgers using hash-chained entries assume sequential writes. Under concurrent load, race conditions produce duplicate prev_hash values — creating ledger forks the signer cannot reconcile. SPECTER KERNEL proves the gap between what the audit ledger says happened and what actually happened.

chain tip race signer overflow ledger gap proof forge divergence

Architecture

Six Subsystems. End-to-End Kernel Attack Chain.

Each subsystem targets a distinct layer of kernel-enforced AI governance. Run independently or chain together for full end-to-end attack chain evidence.

S-01

KERNEL_ENV_PROBE

Enumerates kernel attack prerequisites: BPF-LSM availability, BTF support, bpftool, clang, AppArmor state, root status. Scores attack viability across 6 dimensions and determines which subsequent subsystems will succeed.

kernel_env_probe btf_check lsm_stack_enum

S-02

SYSCALL_FORGE

Compiles eBPF tracepoint programs for 5 syscall classes (openat, execve, connect, write, ptrace) that rewrite arguments at kernel entry. Proves divergence: what the monitor records vs. what the agent actually performed.

compile_bpf prove_divergence 5 syscall classes

S-03

LSM_BYPASS

Determines BPF-LSM position in the LSM stack relative to AppArmor. Compiles override programs for file_open, bprm_check, and socket_connect hooks. If BPF-LSM loads after AppArmor, attacker hooks run last and return ALLOW for all.

check_bpf_position compile_override hook_ordering

S-04

CHILD_ESCAPE

Enumerates namespace boundaries (pid, net, mnt, uts, ipc) and compares agent namespaces against parent. Scans open file descriptors for missing O_CLOEXEC flags. Identifies every fd an agent subprocess can inherit across execve.

enum_namespaces fd_cloexec_scan ns_comparison

S-05

LEDGER_POISON

Attacks hash-chain audit ledgers via three techniques: concurrent writer threads producing duplicate prev_hash values (chain fork), burst events overflowing the async signer queue (dropped entries), and cross-validation against SYSCALL_FORGE proving the ledger gap.

chain_tip_race signer_overflow gap_proof

S-06

EVIDENCE

Assembles hash-chained evidence packages from all subsystem outputs. Each finding carries a cryptographic evidence hash linking the attack artefacts to the governance gap they demonstrate. Full chain report suitable for inclusion in pentest deliverables.

hash_chain evidence_pack chain_report

Proof

What the Ledger Says. What Actually Happened.

SPECTER KERNEL does not just find vulnerabilities — it generates machine-readable, hash-chained proof of governance failure at every layer.

> SYSCALL_FORGE [openat]: monitor records openat('/tmp/harmless') — agent actually performed openat('/etc/shadow')
> Evidence hash: a3f7c2d1b8e9... [truncated]
> Divergence: CONFIRMED — monitor cannot be trusted

> LSM_BYPASS: BPF-LSM loaded AFTER AppArmor (position 2 of 2)
> AppArmor DENY on file_open('/sensitive') — attacker BPF hook returns ALLOW
> Override program compiled: True — attack viable

> LEDGER_POISON: chain_tip_race — 7 duplicate prev_hashes detected (10 writers, 500ms window)
> Signer overflow: 100 events generated, 13 dropped (async queue saturation)
> Gap verdict: FORGE recorded 20 events — ledger shows 7 — gap CONFIRMED

> CHILD_ESCAPE: 3 fds without O_CLOEXEC (fd=3: pipe, fd=7: socket, fd=11: eventfd)
> Namespace: agent in sandbox — fd inheritance gap allows child to access parent sockets
> Severity: HIGH

Safety Gate

KAMIKAZE Dual-Gate Authorization

SPECTER KERNEL requires KAMIKAZE-class authorization for all active exploitation. The eBPF compilation, LSM hook loading, and container pivot capabilities require both the UNLEASHED Ed25519 key and explicit --confirm-destroy confirmation. KERNEL_ENV_PROBE and EVIDENCE run unauthenticated.

OPEN

Kernel environment probe, prerequisite enumeration, namespace mapping, and evidence chain assembly. Read-only operations. No kernel modification required.

specter-kernel scan [--output report.json]

FORGE

eBPF program compilation (offline only — produces artefacts without loading), LSM stack analysis, ledger concurrency testing, FD inheritance scanning. Requires UNLEASHED key.

specter-kernel forge --override [target]

KAMIKAZE

eBPF program loading into kernel, active LSM hook installation, live namespace escape demonstration. Both --override and --confirm-destroy required. Authorised test environments only.

specter-kernel exploit --override --confirm-destroy [target]

Deployment

Deployment Compatibility

Python3.11+

Kernel5.7+ (BPF-LSM)

eBPFclang / LLVM

BTF/sys/kernel/btf/vmlinux

bpftool5.15+

LSMAppArmor + BPF-LSM

OutputWARLORD JSON + chain

AuthEd25519 KAMIKAZE gate

Tests626 (580 offline)

ARMORY20 kernel payloads

CVSSPer-finding scores

PlatformLinux x86-64 only

SPECTER KERNEL is an authorised security research and penetration testing tool. Loading eBPF programs into a production kernel without explicit written authorisation from the system owner is prohibited. Active LSM hook installation and namespace escape capabilities are designed for isolated test environments only. Red Specter Security Research Ltd assumes no liability for misuse. This tool requires root or CAP_BPF capability to operate.