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Update five std CVEs (#946)

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Yechan Bae
2021-07-06 14:36:13 -04:00
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rust/std/CVE-2017-20004.md Normal file
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```toml
[advisory]
id = "CVE-2017-20004"
package = "std"
categories = ["thread-safety"]
date = "2017-04-29"
url = "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-20004"
[versions]
patched = [">= 1.19.0"]
unaffected = ["< 1.0.0"]
```
# MutexGuard\<Cell\<i32\>\> must not be Sync
In the standard library in Rust before 1.19.0, there is a synchronization problem in the MutexGuard object. MutexGuards can be used across threads with any types, allowing for memory safety issues through race conditions.