Xen 4.x, when downgrading the grant table version, does not...

Vulnerability Description

Xen 4.x, when downgrading the grant table version, does not properly remove the status page from the tracking list when freeing the page, which allows local guest OS administrators to cause a denial of service (hypervisor crash) via unspecified vectors.

References

• http://www.openwall.com/lists/oss-security/2012/12/03/6
• http://secunia.com/advisories/55082
• http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00011.html
• http://lists.opensuse.org/opensuse-updates/2013-04/msg00052.html
• http://support.citrix.com/article/CTX135777
• http://security.gentoo.org/glsa/glsa-201309-24.xml
• http://www.debian.org/security/2012/dsa-2582
• http://secunia.com/advisories/51397
• http://lists.opensuse.org/opensuse-security-announce/2012-12/msg00018.html
• http://secunia.com/advisories/51486
• http://secunia.com/advisories/51487
• http://www.securityfocus.com/bid/56794
• http://secunia.com/advisories/51468
• http://lists.opensuse.org/opensuse-updates/2013-04/msg00051.html
• http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html
• http://lists.opensuse.org/opensuse-security-announce/2012-12/msg00019.html
• http://www.osvdb.org/88128
• https://exchange.xforce.ibmcloud.com/vulnerabilities/80478
• http://lists.opensuse.org/opensuse-security-announce/2012-12/msg00001.html