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.

References

http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00004.html

http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00007.html

http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00029.html

http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00030.html

http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00014.html

http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00027.html

http://support.citrix.com/article/CTX201145

http://www.debian.org/security/2015/dsa-3286

http://www.securityfocus.com/bid/75149

http://www.securitytracker.com/id/1032569

http://xenbits.xen.org/xsa/advisory-136.html

https://security.gentoo.org/glsa/201604-03

Details

Risk Information

CVSS v2