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Canonical Discloses 44 Vulnerabilities in Ubuntu's Rust-Based Coreutils Implementation

Canonical has identified 44 critical vulnerabilities in uutils, the Rust reimplementation of GNU coreutils, during an external audit ahead of the 26.04 LTS release. While the rewrite successfully eliminated memory-safety issues common in C codebases, it introduced new risks related to Time-Of-Check-To-Time-Of-Use (TOCTOU) race conditions and incorrect handling of raw bytes versus UTF-8 strings.