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Merge pull request #579 from ammaraskar/conquer-once

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[patched] Add advisory for data race in conquer-once
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Sergey "Shnatsel" Davidoff
2021-01-20 19:57:52 +01:00
committed by GitHub
parent 4250822874 6fb69056e2
commit a7921802fb
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crates/conquer-once/RUSTSEC-0000-0000.md Normal file
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```toml
[advisory]
id = "RUSTSEC-0000-0000"
package = "conquer-once"
date = "2020-12-22"
url = "https://github.com/oliver-giersch/conquer-once/issues/3"
categories = ["memory-corruption"]
keywords = ["concurrency"]
[versions]
patched = [">= 0.3.2"]
unaffected = []
```
# conquer-once's OnceCell lacks Send bound for its Sync trait.
Affected versions of `conquer-once` implements `Sync` for its `OnceCell` type
without restricting it to `Send`able types.
This allows non-`Send` but `Sync` types such as `MutexGuard` to be sent across
threads leading to undefined behavior and memory corruption in concurrent
programs.
The issue was fixed by adding a `Send` constraint to `OnceCell`.