CVE-2021-28878
High
Description
In the standard library in Rust before 1.52.0, the Zip implementation calls __iterator_get_unchecked() more than once for the same index (under certain conditions) when next_back() and next() are used together. This bug could lead to a memory safety violation due to an unmet safety requirement for the TrustedRandomAccess trait.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Rust
PublishedApr 11, 2021
First seenApr 11, 2021
How to fix
Update
- rust-lang rust1.52.0 or later
Vendor advisories
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CZ337CM4GFJLRDFVQCGC7J25V65JXOG5/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VZG65GUW6Z2CYOQHF7T3TB5CZKIX6ZJE/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TFUO3URYCO73D2Q4WYJBWAMJWGGVXQO4/
- security.gentoo.org/glsa/202210-09
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| rust-lang rust | v < 1.52.0 | 1.52.0 |
| fedoraproject fedora | 32, 33, 34 | — |
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