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Rust entered the Linux kernel as an experiment in 2022. Three years on it has stable in-tree drivers, an increasingly polished internal API, and a first wave of contributors who treat the language as the default choice for new code.
Rust Edition 2024 became stable on February 20, 2025 alongside Rust 1.85. Seven weeks later, the changes that actually matter for daily work are three: more granular variable capture in closures and Return Position Impl Trait, an expanded prelude with Future and AsyncFn, and unsafe now mandatory in extern blocks.
Rust joined Linux mainline in version 6.1 (2022), and by 6.9 (2024) it already ships experimental drivers, including Asahi's GPU driver for Apple Silicon. In C/C++ projects like Chromium, around 70 percent of serious security bugs are memory-safety bugs, the real reason kernel maintainers are debating whether to adopt it.
