Xen 4.0 and 4.1 allows local HVM guest OS kernels...

Vulnerability Description

Xen 4.0 and 4.1 allows local HVM guest OS kernels to cause a denial of service (domain 0 VCPU hang and kernel panic) by modifying the physical address space in a way that triggers excessive shared page search time during the p2m teardown.

References

• http://www.debian.org/security/2012/dsa-2531
• http://secunia.com/advisories/55082
• http://www.openwall.com/lists/oss-security/2012/08/09/3
• http://security.gentoo.org/glsa/glsa-201309-24.xml
• http://lists.opensuse.org/opensuse-security-announce/2012-08/msg00025.html
• http://lists.opensuse.org/opensuse-security-announce/2012-08/msg00024.html
• http://www.securityfocus.com/bid/54942
• http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00018.html
• http://lists.xen.org/archives/html/xen-devel/2012-08/msg00855.html
• http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00017.html