Certain page table manipulation operations in Xen 4.1.x, 4.2.x, and earlier are not preemptible, which allows local PV kernels to cause a denial of service via vectors related to "deep page table traversal."
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| http://secunia.com/advisories/55082 | third party advisory |
| http://lists.fedoraproject.org/pipermail/package-announce/2013-May/105533.html | vendor advisory |
| http://security.gentoo.org/glsa/glsa-201309-24.xml | vendor advisory |
| http://secunia.com/advisories/53187 | third party advisory vendor advisory |
| http://www.debian.org/security/2013/dsa-2666 | vendor advisory |
| http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html | vendor advisory |
| http://www.openwall.com/lists/oss-security/2013/05/02/8 | mailing list |
| http://www.securityfocus.com/bid/59615 | vdb entry |