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22 lines
965 B
Markdown
22 lines
965 B
Markdown
```toml
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[advisory]
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id = "RUSTSEC-2020-0112"
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package = "buttplug"
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date = "2020-12-18"
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url = "https://github.com/buttplugio/buttplug-rs/issues/225"
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categories = ["memory-corruption", "thread-safety"]
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[versions]
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# Versions which include fixes for this vulnerability
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patched = [">= 1.0.4"]
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```
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# ButtplugFutureStateShared allows data race to (!Send|!Sync) objects
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`ButtplugFutureStateShared<T>` implements `Send` & `Sync` regardless of `T`.
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If `T: !Send` for `ButtplugFutureStateShared<T>`, it is possible to move non-Send types across thread boundaries (e.g. `T`=`Rc<T>`) and lead to undefined behavior.
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If `T: !Sync` for `ButtplugFutureStateShared<T>`, it is possible to cause data race to `T` (e.g. `T`=`Arc<Cell<_>>`) and lead to undefined behavior.
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The flaw was corrected in version 1.0.4 by removing manual implementations of `Send`/`Sync` for `ButtplugFutureStateShared<T>` to let rustc generate auto trait implementations with correct trait bounds on `T`.
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