X.org libXi before 1.7.7 allows remote X servers to cause a denial of service (infinite loop) via vectors involving length fields.
www.openwall.com/lists/oss-security/2016/10/04/2
www.openwall.com/lists/oss-security/2016/10/04/4
www.securityfocus.com/bid/93374
www.securitytracker.com/id/1036945
cgit.freedesktop.org/xorg/lib/libXi/commit/?id=19a9cd607de73947fcfb104682f203ffe4e1f4e5
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/C3NTWIWSQ575GREBVAOUQUIMDL5CDVGP/
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KVTZ2XLPKLASQUIQA2GMKKAUOQIUMM7I/
lists.x.org/archives/xorg-announce/2016-October/002720.html
security.gentoo.org/glsa/201704-03