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Add advisory for data race in lever #589

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Jan 30, 2021
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Add advisory for data race in lever #589

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21 changes: 21 additions & 0 deletions crates/lever/RUSTSEC-0000-0000.md
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```toml
[advisory]
id = "RUSTSEC-0000-0000"
package = "lever"
date = "2020-11-10"
url = "https://github.com/vertexclique/lever/issues/15"
categories = ["memory-corruption"]
keywords = ["concurrency"]

[versions]
patched = []
```

# AtomicBox<T> lacks bound on its Send and Sync traits allowing data races

`AtomicBox<T>` is a `Box` type designed to be used across threads, however, it
implements the `Send` and `Sync` traits for all types `T`.

This allows non-Send types such as `Rc` and non-Sync types such as `Cell` to
be used across thread boundaries which can trigger undefined behavior and
memory corruption.