Set-special-specific user identification ( SUID ) in Redhat:
, Three special types of permissions are available for the executable files/ programs and all public directories. When these permissions are set, for any user who runs that executable file assumes the user ID of the owner (or group) of the executable file.
SUID is a special type of file permissions given to a file. It’s Normally in Linux when a program runs, and it inherits access permissions from the logged in user. SUID is defined as giving temporary permissions to a user to run a program with the permissions of the file owner rather that the user who runs it.
We can say, In simple words users will get file owner’s permissions as well as owner UID and GID when executing a file/program.