CVE-2015-4164

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.

🔗 References (24)

• cve@mitrehttp://lists.opensuse.org/opensuse-security-announce/2015-06/msg00004.html
• cve@mitrehttp://lists.opensuse.org/opensuse-security-announce/2015-06/msg00007.html
• cve@mitrehttp://lists.opensuse.org/opensuse-security-announce/2015-06/msg00029.html
• cve@mitrehttp://lists.opensuse.org/opensuse-security-announce/2015-06/msg00030.html
• cve@mitrehttp://lists.opensuse.org/opensuse-security-announce/2015-07/msg00014.html
• cve@mitrehttp://lists.opensuse.org/opensuse-security-announce/2015-09/msg00027.html
• cve@mitrehttp://support.citrix.com/article/CTX201145
• cve@mitrehttp://www.debian.org/security/2015/dsa-3286
• cve@mitrehttp://www.securityfocus.com/bid/75149
• cve@mitrehttp://www.securitytracker.com/id/1032569
• cve@mitrehttp://xenbits.xen.org/xsa/advisory-136.html
• cve@mitrehttps://security.gentoo.org/glsa/201604-03
• af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00004.html
• af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00007.html
• af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00029.html