Provide references for CVE-2018-12891.
Where can I find more information about CVE-2018-12891?
References are available at: https://www.debian.org/security/2018/dsa-4236, https://support.citrix.com/article/CTX235748, https://security.gentoo.org/glsa/201810-06, https://lists.debian.org/debian-lts-announce/2018/11/msg00013.html, http://xenbits.xen.org/xsa/advisory-264.html, http://www.securitytracker.com/id/1041201, http://www.openwall.com/lists/oss-security/2018/06/27/10, http://www.securityfocus.com/bid/104570.