Ubuntu 17.04: USN-3404-1 Critical: Linux Kernel Denial Of Service

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 17.04:
  linux-image-4.10.0-1016-raspi2  4.10.0-1016.19
  linux-image-4.10.0-33-generic   4.10.0-33.37
  linux-image-4.10.0-33-generic-lpae  4.10.0-33.37
  linux-image-4.10.0-33-lowlatency  4.10.0-33.37
  linux-image-generic             4.10.0.33.33
  linux-image-generic-lpae        4.10.0.33.33
  linux-image-lowlatency          4.10.0.33.33
  linux-image-raspi2              4.10.0.1016.17

After a standard system update you need to reboot your computer to make
all the necessary changes.

ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.