CVE-2015-6251: Debian Linux

Medium severity, CVSS 5.0. EPSS: 19% chance of exploitation in the next 30 days.

Double free vulnerability in GnuTLS before 3.3.17 and 3.4.x before 3.4.4 allows remote attackers to cause a denial of service via a long DistinguishedName (DN) entry in a certificate.

Affected products

• Debian Debian Linux: version 8.0 only
• GNU Gnutls: version 3.3.0 only; version 3.3.1 only; version 3.3.2 only; version 3.3.3 only; version 3.3.4 only; version 3.3.5 only; …

Published 2015-08-24. Last modified 2026-06-17.