Provide references for CVE-2019-6977.
Where can I find more information about CVE-2019-6977?
References are available at: http://www.securityfocus.com/bid/106731, https://security.netapp.com/advisory/ntap-20190315-0003/, http://php.net/ChangeLog-5.php, http://php.net/ChangeLog-7.php, https://usn.ubuntu.com/3900-1/, https://lists.debian.org/debian-lts-announce/2019/01/msg00028.html, https://bugs.php.net/bug.php?id=77270, https://www.debian.org/security/2019/dsa-4384, https://security.gentoo.org/glsa/201903-18, http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00025.html, http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00031.html, https://www.exploit-db.com/exploits/46677/, http://packetstormsecurity.com/files/152459/PHP-7.2-imagecolormatch-Out-Of-Band-Heap-Write.html, https://access.redhat.com/errata/RHSA-2019:2519, https://access.redhat.com/errata/RHSA-2019:3299, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TEYUUOW75YD3DENIPYMO263E6NL2NFHI/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3WRUPZVT2MWFUEMVGTRAGDOBHLNMGK5R/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TTXSLRZI5BCQT3H5KALG3DHUWUMNPDX2/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3CZ2QADQTKRHTGB2AHD7J4QQNDLBEMM6/.