Ubuntu 25.10 has introduced a Rust-based alternative to the traditional sudo command, aiming to enhance security and performance. This new approach leverages Rust's safety features to reduce vulnerabilities associated with privilege escalation. The transition marks a significant shift in how user permissions are managed within the operating system.

Ubuntu will adopt sudo-rs, a Rust-based reimplementation of the traditional sudo tool, as the default implementation starting with Ubuntu 25.10. This initiative, led in partnership with the Trifecta Tech Foundation, aims to enhance security through memory-safe alternatives while maintaining compatibility with existing workflows. Additional developments include support for coreutils and SELinux, ensuring a seamless migration process for users.

A bug in the Rust-based uutils version of the date command in Ubuntu 25.10 has caused automatic updates to fail on some systems, including cloud deployments and desktop installations. The issue affects systems with the rust-coreutils package version 0.2.2-0ubuntu2 or earlier, and a fix is available in the updated version. Manual updates using the apt command are unaffected by this bug.