Description:

Security-enhanced Linux is a patch of the Linux kernel and a number
of utilities with enhanced security functionality designed to add
mandatory access controls to Linux. The Security-enhanced Linux kernel
contains new architectural components originally developed to improve
the security of the Flask operating system. These architectural
components provide general support for the enforcement of many kinds
of mandatory access control policies, including those based on the
concepts of Type Enforcement, Role-based Access Control, and
Multi-level Security.

libselinux provides an API for SELinux applications to get and set
process and file security contexts and to obtain security policy
decisions. Required for any applications that use the SELinux API.