The XGetImage function in X.org libX11 before 1.6.4 might allow remote X servers to gain privileges via vectors involving image type and geometry, which triggers out-of-bounds read operations.Referenceshttp://www.securitytracker.com/id/1036945https://usn.ubuntu.com/3758-2/https://security.gentoo.org/glsa/201704-03http://www.securityfocus.com/bid/93363https://lists.x.org/archives/xorg-announce/2016-October/002720.htmlhttp://www.openwall.com/lists/oss-security/2016/10/04/4http://www.openwall.com/lists/oss-security/2016/10/04/2https://usn.ubuntu.com/3758-1/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GMCVDXMFPXR7QGMKDG22WPPJCXH2X3L7/https://cgit.freedesktop.org/xorg/lib/libX11/commit/?id=8ea762f94f4c942d898fdeb590a1630c83235c17
