checkmodule tips — authorized SELinux module-compile literacy

Last updated: · By the BinBench editorial team · Stars and releases checked via the GitHub API
For legal, authorized and educational use only. Only analyze software you own or have written permission to examine.
Quick answer

checkmodule helps authorized labs sample SELinux policy-module compile literacy on hosts they own. Pair with semodule-tips, audit2allow-tips, seinfo-tips, selinux-tips, getenforce-tips. Prefer lab VMs — never compile hostile modules for foreign hosts without permission.

On this page

Snapshot

FieldValue
Surfacecheckmodule tip checklist (.te → .mod compile)
JobAuthorized SELinux module-compile literacy
Peersemodule-tips
Peeraudit2allow-tips
Peerseinfo-tips
Peerselinux-tips

Tip checklist (authorized only)

  1. Confirm you may run checkmodule on the lab host (syllabus box you own or were given access to).
  2. Prefer documenting who / why / ticket before any module compile — never build production modules without change control.
  3. Record short factual notes; quote short Evidence (module name + compile ok/fail — never secrets or full .te with sensitive paths).
  4. Optional: install peer → semodule-tips.
  5. Optional: AVC→allow peer → audit2allow-tips.
  6. Prefer disposable lab VMs for compile drills; quote non-secret module names afterward as Evidence.
  7. Prefer compiling syllabus-provided .te sources only — refuse unauthorized hostile-module cookbooks.
  8. Stop at literacy — no attack or unauthorized MAC-bypass cookbooks.

Allowed framing

  • Classroom labs reviewing checkmodule -M -m -o lab.mod lab.te on authorized disposable hosts.
  • Binding short factual notes as Evidence (module name + compile outcome — no secrets).
  • Documenting expected vs observed compile results for authorized notes.
  • Comparing checkmodule ↔ semodule / audit2allow / seinfo / selinux peer tip pages under one binder.
  • Testing syllabus-approved custom module compiles only when change control authorizes that drill on lab resources.

Scope we will not cover

  • No crack/pirate/keygen via checkmodule.
  • No intentional unauthorized SELinux hostile-module compile against foreign hosts.
  • No secret-theft or policy-source credential harvesting against hosts you do not own.
  • No cookbooks that weaken SELinux via hostile modules for attack without authorization.
  • No compile→install framed as an exploit step against production.

Beginner path (authorized only)

  1. Obtain one syllabus-approved disposable lab host with checkpolicy / checkmodule available.
  2. Prefer a throwaway lab VM before any module compile drill.
  3. With authorization, run checkmodule -M -m on a syllabus .te; quote module name + outcome as Evidence.
  4. Optional: peer tip pages above when the syllabus asks.
  5. Stop at literacy — no attack or unauthorized module-bypass cookbooks.

Practical notes for authorized labs

  • checkmodule compiles SELinux policy module sources — keep Evidence labels distinct from semodule-tips install/list.
  • Pair with audit2allow-tips when the syllabus zooms on generating a .te from lab AVCs before compile.
  • .te sources may embed sensitive paths — never paste secrets into notes or git.
  • Prefer documenting module names and compile outcomes the syllabus authorized without dumping full privileged policy sources.
  • Never commit SELinux .te/.mod blobs with secrets to git — even for labs.

FAQ-aligned refusals (quick)

  • Foreign-host / hostile SELinux module compile → refuse.
  • Unauthorized MAC-bypass / hostile-module attack cookbooks → refuse.
  • Attack/credential-theft framing → refuse.
Which to pick
  • Prefer authorized, redacted, secret-free Evidence.
  • Use semodule / audit2allow / seinfo / selinux peer tip pages when the syllabus asks.
  • No crack or unauthorized-access framing.

For legal, authorized and educational use only.

FAQ

What is a "checkmodule tip" page in BinBench framing?

A checklist for authorized SELinux .te → .mod compile Evidence (checkmodule -M -m on lab policy sources) on hosts you own or were given syllabus access to — not a cookbook for compiling hostile modules against foreign servers.

How does this relate to semodule-tips / audit2allow-tips / seinfo-tips / selinux-tips?

semodule-tips covers module install/list; audit2allow-tips covers AVC→allow generation; seinfo-tips covers policy queries; selinux-tips covers broader literacy. This page zooms on a checkmodule tip checklist — it does not overwrite those pages.

Can I run checkmodule against hosts I do not own?

No. Authorization first. BinBench will not publish unauthorized SELinux module-compile drills against foreign hosts or foreign policy sources.

Does this teach attack or SELinux-bypass PoCs via checkmodule?

No. Mentions of attack/bypass appear only as refusals. Authorized literacy only — prefer lab VMs and redacted module-name labels. Never teach hostile module compile as an attack step.

Does this teach secret theft via checkmodule?

No. Never paste SELinux .te/.mod dumps with secrets, foreign host policy sources, or credential-bearing allow rules into notes. Prefer documenting module names and compile outcomes only.

Sources