kernel_generic_helper_selinux - Man Page

Security-Enhanced Linux secures the kernel_generic_helper processes via flexible mandatory access control.

The kernel_generic_helper processes execute with the kernel_generic_helper_t SELinux type. You can check if you have these processes running by executing the ps command with the -Z qualifier.

For example:

ps -eZ | grep kernel_generic_helper_t

The kernel_generic_helper_t SELinux type can be entered via the bin_t, usr_t file types.

The default entrypoint paths for the kernel_generic_helper_t domain are the following:

All executables with the default executable label, usually stored in /usr/bin and /usr/sbin. /opt/.*, /usr/.*, /emul/.*, /export(/.*)?, /ostree(/.*)?, /usr/doc(/.*)?/lib(/.*)?, /usr/inclu.e(/.*)?, /usr/share/rpm(/.*)?, /usr/share/doc(/.*)?/README.*, /usr/lib/modules(/.*)/vmlinuz, /usr/lib/modules(/.*)/initramfs.img, /usr/lib/sysimage(/.*)?, /usr/lib/ostree-boot(/.*)?, /opt, /usr, /emul

SELinux defines process types (domains) for each process running on the system

You can see the context of a process using the -Z option to psbP

Policy governs the access confined processes have to files. SELinux kernel_generic_helper policy is very flexible allowing users to setup their kernel_generic_helper processes in as secure a method as possible.

The following process types are defined for kernel_generic_helper:

kernel_generic_helper_t

Note: semanage permissive -a kernel_generic_helper_t can be used to make the process type kernel_generic_helper_t permissive. SELinux does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated.

SELinux policy is customizable based on least access required.  kernel_generic_helper policy is extremely flexible and has several booleans that allow you to manipulate the policy and run kernel_generic_helper with the tightest access possible.

If you want to allow all domains to execute in fips_mode, you must turn on the fips_mode boolean. Enabled by default.

setsebool -P fips_mode 1

semanage fcontext can also be used to manipulate default file context mappings.

semanage permissive can also be used to manipulate whether or not a process type is permissive.

semanage module can also be used to enable/disable/install/remove policy modules.

semanage boolean can also be used to manipulate the booleans

system-config-selinux is a GUI tool available to customize SELinux policy settings.

This manual page was auto-generated using sepolicy manpage .

selinux(8), kernel_generic_helper(8), semanage(8), restorecon(8), chcon(1), sepolicy(8), setsebool(8)

kernel_selinux(8).