

Mainly memory safety; split
(which is also used for other programs like sort
) had a memory heap overflow issue last year to name one.
The GNU Coreutils are well tested and very well written, the entire suite of programs has a CVE only once every few years from what I can see, but they do exist and most of those would be solved with a memory and type safe language.
That said, Rust also handles parallelism and concurrency much better than C ever could, though most of these programs don’t really benefit from that or not much since they already handled this quite well, especially for C programs.
Likely not anytime soon as they tend to hold off latest features and prefer older (but maintained) LTS versions of just about everything. Also especially not if it turns out to be a bad idea; they explicitly build Mint without Snaps since their inclusion in the Ubuntu base.