Modulejail: Proactively shrink a Linux host's kernel-module attack surface
ModuleJail is a shell script designed to reduce the kernel-module attack surface of Linux hosts. It creates a blacklist of unused kernel modules, helping sysadmins manage security vulnerabilities more effectively. While it does not fix kernel bugs, it allows for better control over which modules are loaded, potentially mitigating risks from future vulnerabilities.
- ▪ModuleJail writes a modprobe.d blacklist for every unused kernel module on a Linux host.
- ▪The tool does not include AI, daemons, or continuous monitoring, making it straightforward to use.
- ▪By blacklisting unused modules, sysadmins can reduce the impact of newly disclosed vulnerabilities.
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Record
| Original publisher | GitHub |
| Canonical URL | https://github.com/jnuyens/modulejail |
| Publication time | Sat, 23 May 2026 10:11:16 +0000 |
| Retrieval time | 2026-05-23T10:37:26.419Z |
| Last seen | 2026-05-23T10:37:26.419Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | 3EdiDKVhtwqF |
| Cluster logic | Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
Rights status (four layers)
WeSearch handling by dimension
| Indexing | May the item be indexed (stored, ranked, made findable)? | Allowed |
| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
A single POSIX shell script that shrinks a Linux host's kernel-module attack surface by writing a modprobe.d blacklist for every kernel module not currently in use, minus a built-in baseline and an optional sysadmin whitelist. No daemons, no initramfs changes, no AI inside the tool. One script, one run, one blacklist file. Why? AI-assisted security scanning is about to do to the Linux kernel what large-scale fuzzing did to userspace code a decade ago, only faster and at a much larger scale. Many years of latent privilege-escalation bugs in kernel modules are about to surface in quick succession over the coming weeks and months. Long term, this is a major win for kernel security: every disclosure closes a door that an attacker could otherwise have walked through unseen.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at GitHub.