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Everything about Linux Security Modules

Framework to support computer security models

Linux Security Modules (LSM) is a framework allowing the Linux kernel to support, without bias, a variety of computer security models. LSM is licensed under the terms of the GNU General Public License and is a standard part of the Linux kernel since Linux 2.6. As of 2025, AppArmor, LoadPin, SELinux, Smack, TOMOYO, Yama, SafeSetID, Integrity Policy Enforcement (IPE), and Landlock are the currently approved security modules in the official kernel. Wikipedia →

🧭 Start here: a 6-step reading path

  1. Read the overview: Linux Security ModulesA 5-minute orientation
  2. Skim a recent paper: RootAsRole: a security module to manage the administrative privileges for LinuxInfluential work since 2022
  3. Pick up a classic book: Modern Operating SystemsThe most-reprinted book on the subject
  4. Read the landmark paper: Consistency analysis of authorization hook placement in the Linux security modules frameworkCited 39 times
  5. Go sideways: Tomoyo LinuxA closely related topic
  6. Go sideways: AppArmorA closely related topic

📖 Definitions

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🗂️ The subject at a glance

  1. Design
  2. Adoption
  3. History

🏆 Landmark papers (most cited)

🆕 Influential since 2022

📚 Books worth reading

Ranked by number of editions on Open Library, a rough measure of how lasting a book is.

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