The xmlBufAttrSerializeTxtContent function in xmlsave.c in libxml2 allows context-dependent attackers to cause a denial of service (out-of-bounds read and application crash) via a non-UTF-8 attribute value, related to serialization. NOTE: this vulnerability may be a duplicate of CVE-2016-3627.
https://www.tenable.com/security/tns-2016-18
https://security.gentoo.org/glsa/201701-37
https://git.gnome.org/browse/libxml2/commit/?id=c97750d11bb8b6f3303e7131fe526a61ac65bcfd
http://www.securitytracker.com/id/1036348
http://www.securityfocus.com/bid/90013
http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html
http://www.openwall.com/lists/oss-security/2016/06/07/5
http://www.openwall.com/lists/oss-security/2016/06/07/4
http://www.openwall.com/lists/oss-security/2016/05/04/7