Linux Security Modules

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, , SELinux, Smack, TOMOYO, , , (IPE), and are the currently approved security modules in the official kernel.