PT-2026-80710 · Crates.Io · Sp-Sized-Chunks
Publicado
2026-08-11
·
Atualizado
2026-08-11
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Several methods in
sp-sized-chunks drop elements before updating the container's length/boundary metadata. If an element's Drop panics during the drop, the metadata update is skipped, so the container still treats the already-dropped elements as live. When the container is later dropped, its own Drop re-visits those slots and drops the freed elements again — a use-after-free / double-free reachable from safe Rust.sp-sized-chunks is a fork of sized-chunks (companion advisory filed separately) and carries the same bug. The repository is archived and the crate is still on 0.1.0 with no fix available.Impact
- CWE-415 (Double Free): the same allocation is freed twice (e.g. an element holding
Box<T>). - CWE-416 (Use-After-Free): an element reads its own freed allocation during
Drop(e.g.String) — confirmed under AddressSanitizer.
All are reachable from safe Rust via
catch unwind with element types whose Drop can panic. Encontrou algum problema na descrição? Tem algo a acrescentar? Fique à vontade para nos escrever 👾
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Produtos afetados
Sp-Sized-Chunks