CVE-2014-8595 Information

Description

arch/x86/x86_emulate/x86_emulate.c in Xen 3.2.1 through 4.4.x does not properly check privileges which allows local HVM guest users to gain privileges or cause a denial of service (crash) via a crafted (1) CALL (2) JMP (3) RETF (4) LCALL (5) LJMP or (6) LRET far branch instruction.

Reference

http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00005.html http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00010.html http://secunia.com/advisories/62537 http://secunia.com/advisories/62672 http://support.citrix.com/article/CTX200288 http://support.citrix.com/article/CTX201794 http://www.debian.org/security/2015/dsa-3140 http://www.securityfocus.com/bid/71151 http://xenbits.xen.org/xsa/advisory-110.html https://exchange.xforce.ibmcloud.com/vulnerabilities/98768 https://security.gentoo.org/glsa/201504-04