CVE-2021-28032

The CVE concerns the Rust crate nano_arena before 0.5.2. A flaw in the split_at logic allows two mutable references to the same element when Borrow behaves in certain ways, creating a potential for memory safety issues such as an out-of-bounds write or use-after-free. The issue is rooted in alias...

RUSTSEC-2021-0031 split_at allows obtaining multiple mutable references to the same data

Affected versions of this crate assumed that Borrow was guaranteed to return the same value on .borrow. The borrowed index value was used to retrieve a mutable reference to a value. If the Borrow implementation returned a different index, the split arena would allow retrieving the index as a...