It seems, that the kernel of the operating system Linux is monolithic unlike other more sophisticated micronuclei operating systems:
the XNU kernel of OS and MacOSX core NT of Windows operating system.
With the rights no problem. The kernel on request, trusted the demon will fulfill all that he asks.
If you are interested in this topic - I recommend reading about the architecture of FreeBSD, which is a hybrid microkernel/monolithic; about the Mach architecture, where a separate core to run like demons; about the architecture of QNX, which is the best implementation of microkernel operating systems.