Off-by-one error in the append_utf8_value function in the DN decoder (dn.c) in Libksba before 1.3.4 allows remote attackers to cause a denial of service (out-of-bounds read) via invalid utf-8 encoded data. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-4356.
http://www.ubuntu.com/usn/USN-2982-1
http://www.openwall.com/lists/oss-security/2016/05/10/4
http://www.openwall.com/lists/oss-security/2016/05/10/3
http://lists.opensuse.org/opensuse-updates/2016-06/msg00028.html
http://lists.opensuse.org/opensuse-updates/2016-05/msg00087.html