To add data on the Rust side: https://github.com/rust-fuzz/trophy-case https://github.com/rust-fuzz/trophy-case there are a few Rust ASN implementations. They

To add data on the Rust side: https://github.com/rust-fuzz/trophy-case https://github.com/rust-fuzz/trophy-case there are a few Rust ASN implementations. They've been caught running out of memory and having arithmetic overflows, but no segfaults or use-after-frees. Rust doesn't prevent all problems, but things that slip through tend to be less severe.