Historically, the getuid system call did not require special privileges to execute. However, on 64-bit systems, particularly with getuid-x64 , there are specific scenarios where running this system call requires administrator (or elevated) privileges. The primary reason for this requirement is related to security and the prevention of certain types of attacks.
The getuid system call does require Administrator (Root) privileges to execute. Getuid-x64 Require Administrator Privileges
: Requiring administrator privileges for getuid-x64 helps prevent low-privileged processes from accessing sensitive information about the system's user base. This limitation ensures that only authorized processes, typically those needing to manage or query user information for system administration purposes, can access such data. Historically, the getuid system call did not require