Description

The guest_physmap_mark_populate_on_demand function in Xen 4.2 and earlier does not properly unlock the subject GFNs when checking if they are in use, which allows local guest HVM administrators to cause a denial of service (hang) via unspecified vectors.

References

http://lists.opensuse.org/opensuse-security-announce/2012-12/msg00001.html

http://lists.opensuse.org/opensuse-security-announce/2012-12/msg00018.html

http://lists.opensuse.org/opensuse-security-announce/2012-12/msg00019.html

http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00011.html

http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html

http://lists.opensuse.org/opensuse-updates/2013-04/msg00051.html

http://lists.opensuse.org/opensuse-updates/2013-04/msg00052.html

http://secunia.com/advisories/51397

http://secunia.com/advisories/51468

http://secunia.com/advisories/51486

http://secunia.com/advisories/51487

http://secunia.com/advisories/55082

http://security.gentoo.org/glsa/glsa-201309-24.xml

http://support.citrix.com/article/CTX135777

http://www.debian.org/security/2012/dsa-2582

http://www.openwall.com/lists/oss-security/2012/12/03/12

http://www.osvdb.org/88130

http://www.securityfocus.com/bid/56803

https://exchange.xforce.ibmcloud.com/vulnerabilities/80483

Details

Risk Information

CVSS v2