CVE ID:	CVE-2015-4164
Description:	The compat_iret function in Xen 3.1 through 4.5 iterates the wrong way through a loop, which allows local 32-bit PV guest administrators to cause a denial of service (large loop and system hang) via a hypercall_iret call with EFLAGS.VM set.
Test IDs:	1.3.6.1.4.1.25623.1.0.703286   1.3.6.1.4.1.25623.1.0.850745   1.3.6.1.4.1.25623.1.0.851043   1.3.6.1.4.1.25623.1.0.851096   1.3.6.1.4.1.25623.1.1.4.2015.1045.1   1.3.6.1.4.1.25623.1.1.4.2015.1643.1   1.3.6.1.4.1.25623.1.1.4.2015.1206.1   1.3.6.1.4.1.25623.1.1.4.2015.1157.1   1.3.6.1.4.1.25623.1.1.4.2015.1156.1
Cross References:	Common Vulnerability Exposure (CVE) ID: CVE-2015-4164 BugTraq ID: 75149 http://www.securityfocus.com/bid/75149 Debian Security Information: DSA-3286 (Google Search) http://www.debian.org/security/2015/dsa-3286 https://security.gentoo.org/glsa/201604-03 http://www.securitytracker.com/id/1032569 SuSE Security Announcement: SUSE-SU-2015:1042 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00004.html SuSE Security Announcement: SUSE-SU-2015:1045 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00007.html SuSE Security Announcement: SUSE-SU-2015:1156 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00029.html SuSE Security Announcement: SUSE-SU-2015:1157 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00030.html SuSE Security Announcement: SUSE-SU-2015:1206 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00014.html SuSE Security Announcement: SUSE-SU-2015:1643 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00027.html