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add advisory for data race in reffers (#533)

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Youngsuk Kim
2021-01-06 11:10:43 -05:00
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parent 31d74c5408
commit 89a73839e7
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crates/reffers/RUSTSEC-0000-0000.md Normal file
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```toml
[advisory]
id = "RUSTSEC-0000-0000"
package = "reffers"
date = "2020-12-01"
url = "https://github.com/diwic/reffers-rs/issues/7"
informational = "unsound"
categories = ["memory-corruption"]
keywords = ["concurrency"]
[versions]
# Versions which include fixes for this vulnerability
patched = []
```
# Unsound: can make `ARefss` contain a !Send, !Sync object.
`ARefss<'a, V>` is a type that is assumed to contain objects that are `Send + Sync`.
In the affected versions of this crate,
`Send`/`Sync` traits are unconditionally implemented for `ARefss<'a, V>`.
By using the `ARefss::map()` API, we can insert a `!Send` or `!Sync` object into `ARefss<'a, V>`. After that, it is possible to create a data race to the inner object of `ARefss<'a, V>`, which can lead to undefined behavior & memory corruption.
The flaw was corrected in commit 6dd7ca0 (https://github.com/diwic/reffers-rs/commit/6dd7ca0d50f2464df708975cdafcfaeeb6d41c66) by adding trait bound `V: Send + Sync` to `ARefss::map()` API.