==========================================================Ubuntu Security Notice USN-863-1 December 03, 2009
A security issue affects the following Ubuntu releases:
This advisory also applies to the corresponding versions of
Kubuntu, Edubuntu, and Xubuntu.
The problem can be corrected by upgrading your system to the
following package versions:
After a standard system upgrade you need to restart any QEMU guests to
effect the necessary changes.
It was discovered that QEMU did not properly setup the virtio networking
features available to its guests. A remote attacker could exploit this to
crash QEMU guests which use virtio networking on Linux kernels earlier