Xen 3.3 through 4.1, when XSM is enabled, allows local users to cause a denial of service via vectors related to a "large memory allocation," a different vulnerability than CVE-2014-1891, CVE-2014-1893, and CVE-2014-1894.
http://xenbits.xen.org/xsa/advisory-84.html
http://www.openwall.com/lists/oss-security/2014/02/10/8
http://www.openwall.com/lists/oss-security/2014/02/07/4
http://www.openwall.com/lists/oss-security/2014/02/07/12
http://security.gentoo.org/glsa/glsa-201407-03.xml
http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html
http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00011.html
http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00010.html