CVE-2021-31162: Double Free
First published: Wed Apr 14 2021(Updated: )
In the standard library in Rust before 1.52.0, a double free can occur in the Vec::from_iter function if freeing the element panics.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Rust-lang Rust | >=1.48.0<1.52.0 | |
| Fedoraproject Fedora | =32 | |
| Fedoraproject Fedora | =33 | |
| Fedoraproject Fedora | =34 |
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Reference Links
- https://github.com/rust-lang/rust/issues/83618
- https://github.com/rust-lang/rust/pull/83629
- https://github.com/rust-lang/rust/pull/84603
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CZ337CM4GFJLRDFVQCGC7J25V65JXOG5/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TFUO3URYCO73D2Q4WYJBWAMJWGGVXQO4/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VZG65GUW6Z2CYOQHF7T3TB5CZKIX6ZJE/
- https://security.gentoo.org/glsa/202210-09
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CZ337CM4GFJLRDFVQCGC7J25V65JXOG5/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VZG65GUW6Z2CYOQHF7T3TB5CZKIX6ZJE/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TFUO3URYCO73D2Q4WYJBWAMJWGGVXQO4/
Frequently Asked Questions
What is CVE-2021-31162?
CVE-2021-31162 is a vulnerability in the Rust programming language's standard library, before version 1.52.0, that can result in a double free in the Vec::from_iter function if freeing the element panics.
What is the severity of CVE-2021-31162?
CVE-2021-31162 has a severity rating of 9.8 out of 10, making it a critical vulnerability.
How does CVE-2021-31162 affect Rust?
CVE-2021-31162 affects Rust versions before 1.52.0 and can lead to a double free vulnerability in the Vec::from_iter function.
How can CVE-2021-31162 be fixed?
To fix CVE-2021-31162, update Rust to version 1.52.0 or later, which includes the necessary patches.
Are there any references for CVE-2021-31162?
Yes, you can find more information about CVE-2021-31162 on the Rust GitHub repository: [link1], [link2], [link3]
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