Provide references for CVE-2019-9021.
Where can I find more information about CVE-2019-9021?
References are available at: https://usn.ubuntu.com/3902-2/, https://www.debian.org/security/2019/dsa-4398, https://usn.ubuntu.com/3902-1/, https://bugs.php.net/bug.php?id=77247, http://www.securityfocus.com/bid/107156, http://www.securityfocus.com/bid/106747, https://security.netapp.com/advisory/ntap-20190321-0001/, http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00083.html, http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00104.html, http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00041.html, http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00044.html, https://access.redhat.com/errata/RHSA-2019:2519, https://access.redhat.com/errata/RHSA-2019:3299.