SELinux


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SELinux

(Security Enhanced LINUX) A secure version of Linux originally specified by the National Security Agency (NSA) and which became standard since Version 2.6 of the Linux kernel in 2003. SELinux employs Linux Security Modules (LSM), which enables Linux to support mandatory access controls. See mandatory access control and Linux.
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The policy consists of source files used to generate the SELinux kernel policy file, a file_contexts configuration, a property_contexts configuration, a seapp_contexts configuration, and a mac_permissions.
Apparently, the SELinux security implementation on the new Android operating system version also makes rooting access more difficult than before in addition to improving protection against attacks.
Recently, they've started requiring all started services to run in their own SELinux context, instead of init.
SELinux context of some files not always being set properly
Its KVM also supports the SELinux, security framework, and any hardware or application certified to run with RHEL and runs directly on x86-based host hardware, while Red hat is still building the hypervisor into Red Hat Enterprise Linux (RHEL) on version 5.