Multiple integer overflows in the (1) FLASK_GETBOOL (2) FLASK_SETBOOL (3) FLASK_USER and (4) FLASK_CONTEXT_TO_SID suboperations in the flask hypercall in Xen 4.3.x 4.2.x 4.1.x 3.2.x and earlier when XSM is enabled allow local users to cause a denial of service (processor fault) via unspecified vectors a different vulnerability than CVE-2014-1892 CVE-2014-1893 and CVE-2014-1894.