Busybox Su Must Be Suid To Work Properly ^new^ | Original

Without SUID, su would run with the user’s own limited permissions – and then be powerless to elevate access.

The su command (owned by root) temporarily grants the user root-level access to perform the switch. Why BusyBox is Different "su: must be suid to work properly" => How to get rid of it busybox su must be suid to work properly