A vulnerability was found in gnutls versions from 3.5.8 before 3.6.7. A memory corruption (double free) vulnerability in the certificate verification API. Any client or server application that verifies X.509 certificates with GnuTLS 3.5.8 or later is affected.
https://www.gnutls.org/security-new.html#GNUTLS-SA-2019-03-27
https://usn.ubuntu.com/3999-1/
https://security.netapp.com/advisory/ntap-20190619-0004/
https://security.gentoo.org/glsa/201904-14
https://gitlab.com/gnutls/gnutls/issues/694
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3829
https://access.redhat.com/errata/RHSA-2019:3600
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00017.html