Libksba before 1.3.4 allows remote attackers to cause a denial of service (out-of-bounds read and crash) via unspecified vectors, related to the "returned length of the object from _ksba_ber_parse_tl."
https://security.gentoo.org/glsa/201706-22
http://www.ubuntu.com/usn/USN-2982-1
http://www.openwall.com/lists/oss-security/2016/05/11/10
http://www.openwall.com/lists/oss-security/2016/05/10/8
http://lists.opensuse.org/opensuse-updates/2016-06/msg00028.html