• https://access.redhat.com/errata/RHSA-2017:1221
• https://access.redhat.com/errata/RHSA-2017:1220
• https://access.redhat.com/errata/RHSA-2017:3047
• http://www.openwall.com/lists/oss-security/2016/12/05/21
• http://www.securityfocus.com/bid/95131
• http://www.securitytracker.com/id/1041888
• https://access.redhat.com/errata/RHSA-2017:3046
• http://lists.opensuse.org/opensuse-updates/2017-01/msg00050.html
• https://security.gentoo.org/glsa/201701-56
• http://www.securitytracker.com/id/1039427
• https://access.redhat.com/errata/RHSA-2017:1222
• http://lists.opensuse.org/opensuse-updates/2017-01/msg00053.html
• https://access.redhat.com/errata/RHSA-2017:3453
• http://lists.opensuse.org/opensuse-updates/2016-12/msg00127.html
• https://access.redhat.com/errata/RHSA-2017:2999
• https://lists.debian.org/debian-lts-announce/2019/03/msg00027.html
• https://usn.ubuntu.com/4246-1/
• https://lists.debian.org/debian-lts-announce/2020/01/msg00030.html
• https://usn.ubuntu.com/4292-1/
• http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html
• http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html
• https://www.oracle.com/security-alerts/cpujul2020.html
• http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
• https://support.apple.com/HT208144
• https://wiki.mozilla.org/MOSS/Secure_Open_Source/Completed#zlib
• https://support.apple.com/HT208113
• https://support.apple.com/HT208112
• https://support.apple.com/HT208115
• https://wiki.mozilla.org/images/0/09/Zlib-report.pdf
• https://github.com/madler/zlib/commit/d1d577490c15a0c6862473d7576352a9f18ef811
• https://bugzilla.redhat.com/show_bug.cgi?id=1402351
• https://security.netapp.com/advisory/ntap-20181018-0002/
• https://security.gentoo.org/glsa/202007-54