SELinux
| SELinux | |
|---|---|
 | |
 Screenshot of seinfo and semanage showing SELinux information of a policy file used by the system, users of SELinux, and file labels related to Simple Desktop Display Manager | |
| Original authors | NSA and Red Hat |
| Developer | SELinux project |
| Release | 22 December 2000 |
| Stable release | 3.11 
/ 1 July 2026 |
| Written in | C, Python |
| Operating system | Linux |
| Type | Security, Linux Security Modules (LSM) |
| License | GNU GPL |
| Website | selinuxproject |
| Repository | |
Security-Enhanced Linux (SELinux) is a Linux kernel security module that provides a mechanism for supporting access control security policies, including mandatory access controls (MAC).
SELinux is a set of kernel modifications and user-space tools that have been added to various Linux distributions. Its architecture strives to separate enforcement of security decisions from the security policy, and streamlines the amount of software involved with security policy enforcement. The key concepts underlying SELinux can be traced to several earlier projects by the United States National Security Agency (NSA).