CVE-2021-31162: Fedoraproject Fedora

Critical severity, CVSS 9.8. EPSS: 2.9% chance of exploitation in the next 30 days.

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.

Affected products

• Fedoraproject Fedora: version 32 only; version 33 only; version 34 only
• Rust-Lang Rust: from 1.48.0, before 1.52.0 (fixed in 1.52.0)

Published 2021-04-14. Last modified 2026-06-17.