The xmlNextChar function in libxml2 before 2.9.4 allows remote attackers to cause a denial of service (heap-based buffer over-read) via a crafted XML document.
https://www.debian.org/security/2016/dsa-3593
https://support.apple.com/HT206171
https://support.apple.com/HT206169
https://support.apple.com/HT206168
https://support.apple.com/HT206167
https://support.apple.com/HT206166
https://kc.mcafee.com/corporate/index?page=content&id=SB10170
https://git.gnome.org/browse/libxml2/commit/?id=a7a94612aa3b16779e2c74e1fa353b5d9786c602
https://access.redhat.com/errata/RHSA-2016:1292
http://www.ubuntu.com/usn/USN-2994-1
http://www.securitytracker.com/id/1035353
http://www.securityfocus.com/bid/85059
http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
http://rhn.redhat.com/errata/RHSA-2016-2957.html
http://lists.apple.com/archives/security-announce/2016/Mar/msg00005.html
http://lists.apple.com/archives/security-announce/2016/Mar/msg00004.html
http://lists.apple.com/archives/security-announce/2016/Mar/msg00002.html
http://lists.apple.com/archives/security-announce/2016/Mar/msg00001.html
http://lists.apple.com/archives/security-announce/2016/Mar/msg00000.html