CVE-2020-36450

An issue was discovered in the bunch crate through 2020-11-12 for Rust. There are unconditional implementations of Send and Sync for Bunch<T>.

GHSA-jwph-qp5h-f9wj — Data races in bunch

Affected: crates.io: bunch

An issue was discovered in the bunch crate through 2020-11-12 for Rust. Affected versions of this crate unconditionally implements `Send`/`Sync` for `Bunch<T>`. This allows users to insert `T: !Sync` to `Bunch<T>`. It is possible to create a data race to a `T: !Sync` by invoking the `Bunch::get()` API (which returns `&T`) from multiple threads. It is also possible to send `T: !Send` to other threads by inserting `T` inside `Bunch<T>` and sending `Bunch<T>` to another thread, allowing to create a data race by inserting types like `T = Rc<_>`.

Such data races can lead to memory corruption.

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CVE-2020-36450

GHSA-jwph-qp5h-f9wj — Data races in bunch