Su Must Be Suid — To Work Properly 2021

: By making su SUID, system administrators can control who can use su to gain elevated privileges. This ensures that only authorized users can perform actions that could potentially affect system security or stability.

: Without the SUID bit, su would essentially be a command that only works for users who already have the permissions to perform its actions. This defeats the purpose of having a command that allows users to temporarily gain elevated privileges. su must be suid to work properly

The su command needs to be SUID to work properly for several reasons: : By making su SUID, system administrators can