Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/miru-zero/zero-brainnpx agentmods add skills/miru-zero/zero-brain/kernel-exploitationWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/miru-zero/zero-brain/kernel-exploitation)<a href="https://agentmods.dev/skills/miru-zero/zero-brain/kernel-exploitation"><img src="https://agentmods.dev/badge/skills/miru-zero/zero-brain/kernel-exploitation/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/miru-zero/zero-brain/kernel-exploitation"><img src="https://agentmods.dev/badge/skills/miru-zero/zero-brain/kernel-exploitation.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00054 | $0.02975 |
| Opus 5.5 | $0.00022 | $0.01190 |
| Sonnet 5.5 | $0.00011 | $0.00595 |
| Haiku 4.5 | $0.00005 | $0.00298 |
Grade B, and why
kernel-exploitation scanned grade B with 2 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Asks for rootmediumPrivilege escalation
A mod that escalates privileges can change anything on the machine, not only the project.
echo 'cp /flag /tmp/flag && chmod 777 /tmp/flag' >> /tmp/x Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
wget https://cdn.kernel.org/pub/linux/kernel/v6.x/linux-6.1.tar.xz This is a copy
95% identical to kernel-exploitation — 4 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 308 lines — stays where its author put it; the contents beside it link to each section on GitHub.
SKILL: Linux Kernel Exploitation — Expert Attack Playbook
AI LOAD INSTRUCTION: Expert kernel exploitation techniques. Covers environment setup (QEMU), vulnerability classes, privilege escalation targets, kernel ROP, ret2usr, stack pivoting, and cross-cache attacks. Distilled from ctf-wiki kernel-mode sections and real-world kernel CVEs. Base models often confuse user-mode and kernel-mode exploitation constraints, especially regarding SMEP/SMAP/KPTI.
0. RELATED ROUTING
- binary-protection-bypass — userspace protections (NX, ASLR) also apply in kernel context
- stack-overflow-and-rop — kernel ROP reuses many userspace ROP concepts
- heap-exploitation — kernel SLUB is conceptually related to userspace heap
- linux-privilege-escalation — non-exploit kernel privesc techniques
Advanced References
- KERNEL_MITIGATION_BYPASS.md — KASLR, SMEP, SMAP, KPTI, FG-KASLR, CFI bypass techniques
- KERNEL_HEAP_TECHNIQUES.md — SLUB internals, cross-cache attacks, msg_msg/pipe_buffer/sk_buff exploitation
1. EXPLOITATION MODEL
┌─────────────────────────────────────────────────────┐
│ 1. Find Vulnerability │
│ (UAF, OOB, race, integer overflow, type confusion)│
├─────────────────────────────────────────────────────┤
│ 2. Build Primitive │
│ (arbitrary read, arbitrary write, controlled RIP)│
├─────────────────────────────────────────────────────┤
│ 3. Bypass Mitigations │
│ (KASLR, SMEP, SMAP, KPTI) │
├─────────────────────────────────────────────────────┤
│ 4. Escalate Privileges │
│ (commit_creds, modprobe_path, namespace escape) │
├─────────────────────────────────────────────────────┤
│ 5. Return to Userspace Cleanly │
│ (KPTI trampoline, iretq/sysretq, swapgs) │
└─────────────────────────────────────────────────────┘
What ships with it
2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 1mo ago First seen · 308 lines · 54 tokens per session scan B e76b2e9f072f
kernel-exploitation is a skill published in the GitHub repository miru-zero/zero-brain (0 stars, last pushed 2mo ago), licensed MIT. It adds 54 tokens to every session and 2,975 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it B with 2 findings (asks for root, makes network calls). It is 95% identical to kernel-exploitation, differing in 4 lines, and is treated as a copy.
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