I need your help, I've set a root password using the command
sudo passwd root
It says that the password has been set.
But when I exit root user and execute the command
sudo su
It doesn't ask for the root password and it logs into root account.
Why Fedora is not asking me for a root password?
When you first enter the password for sudo, the password will be cached for a short time to allow you to run additional sudo commands in the same terminal without re-entering it.
See man sudo:
Security policies may support credential caching to allow the user to run sudo again for a period of time without requiring authentication. By default, the sudoers policy caches credentials on a per-terminal basis for 15 minutes.
