CVE-2021-20232: Fedoraproject Fedora

Critical severity, CVSS 9.8. EPSS: 3.4% chance of exploitation in the next 30 days.

A flaw was found in gnutls. A use after free issue in client_send_params in lib/ext/pre_shared_key.c may lead to memory corruption and other potential consequences.

Affected products

• Fedoraproject Fedora: version 34 only
• GNU Gnutls: from 3.6.3, before 3.7.1 (fixed in 3.7.1)
• Red Hat Enterprise Linux: version 8.0 only

Published 2021-03-12. Last modified 2026-06-17.