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try-mutex: TryMutex<T> allows sending non-Send type across threads #517

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Dec 7, 2020
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try-mutex: TryMutex<T> allows sending non-Send type across threads #517

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18 changes: 18 additions & 0 deletions crates/try-mutex/RUSTSEC-0000-0000.md
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```toml
[advisory]
id = "RUSTSEC-0000-0000"
package = "try-mutex"
date = "2020-11-17"
url = "https://github.com/mpdn/try-mutex/issues/2"

[versions]
patched = [">= 0.3.0"]
```

# TryMutex<T> allows sending non-Send type across threads

Affected versions of this crate unconditionally implemented Sync trait for `TryMutex<T>` type.

This allows users to put non-Send `T` type in `TryMutex` and send it to another thread, which can cause a data race.

The flaw was corrected in the 0.3.0 release by adding `T: Send` bound for the Sync trait implementation.