CVE-2012-2121

Description

The KVM implementation in the Linux kernel before 3.3.4 does not properly manage the relationships between memory slots and the iommu, which allows guest OS users to cause a denial of service (memory leak and host OS crash) by leveraging administrative access to the guest OS to conduct hotunplug and hotplug operations on devices.

References

http://rhn.redhat.com/errata/RHSA-2012-0676.html

http://rhn.redhat.com/errata/RHSA-2012-0743.html

http://secunia.com/advisories/50732

http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.3.4

http://www.openwall.com/lists/oss-security/2012/04/19/16

http://www.securitytracker.com/id?1027083

http://www.ubuntu.com/usn/USN-1577-1

http://www.ubuntu.com/usn/USN-2036-1

http://www.ubuntu.com/usn/USN-2037-1

https://bugzilla.redhat.com/show_bug.cgi?id=814149

https://github.com/torvalds/linux/commit/09ca8e1173bcb12e2a449698c9ae3b86a8a10195

Details

Risk Information

CVSS v2