Memory Safety Violation in Rust Zip Implementation by Rust Language

CVE-2021-28877

Summary

The implementation of the Zip functionality in the Rust standard library prior to version 1.51.0 contains a flaw where the __iterator_get_unchecked() method can be invoked multiple times for the same index during nested operations. This repetition can compromise memory safety, as it bypasses a critical safety requirement associated with the TrustedRandomAccess trait, leading to potential security risks.

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