CVE-2013-4127 on Ubuntu 12.04 LTS (precise) - medium.
Description:
Use-after-free vulnerability in the vhost_net_set_backend function in drivers/vhost/net.c in the Linux kernel through 3.10.3 allows local users to cause a denial of service (OOPS and system crash) via vectors involving powering on a virtual machine. A vulnerability was discovered in the Linux kernel's vhost net driver. A local user could cause a denial of service (system crash) by powering on a virtual machine.