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CVE-2021-28878

Zip may call __iterator_get_unchecked twice with the same index

Issued
Package
std
Type
Vulnerability
Categories
Details
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-28878
Patched
  • >=1.52.0
Unaffected
  • <1.14.0

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.