CVE-2021-28876: Fedoraproject Fedora

Medium severity, CVSS 5.3. EPSS: 1.6% chance of exploitation in the next 30 days.

In the standard library in Rust before 1.52.0, the Zip implementation has a panic safety issue. It calls __iterator_get_unchecked() more than once for the same index when the underlying iterator panics (in certain conditions). This bug could lead to a memory safety violation due to an unmet safety requirement for the TrustedRandomAccess trait.

Affected products

• Fedoraproject Fedora: version 32 only; version 33 only; version 34 only
• Rust-Lang Rust: before 1.52.0 (fixed in 1.52.0)

Published 2021-04-11. Last modified 2026-06-17.