This update provides Rust 1.57.0 as a feature and bugfix update. See the release notes for details.
The 'std::fs::removedirall' standard library function was vulnerable a race condition enabling symlink following (CWE-363). An attacker could use this security issue to trick a privileged program into deleting files and directories the attacker couldn't otherwise access or delete (CVE-2022-21658). This vulnerability was fixed by patching Rust 1.57.0.