Canonical has updated the Ubuntu 14.10’s Kernel. Upgrade Ubuntu 14.10 Utopic Unicorn Kernel 3.16.0-29.39. Here is how to update the Ubuntu 14.10 Kernel 3.16.0-29.39.
It was said that few Linux kernel vulnerabilities were found in Ubuntu 14.10 (Utopic Unicorn) and they have been corrected with this Kernel upgrade.
So, to upgrade the Ubuntu 14.10 Kernel, run the following commands in Terminal:
sudo apt-get update
sudo apt-get dist-upgrade
sudo apt-get install linux-restricted-modules
The release note says:
“A race condition with MMIO and PIO transactions in the KVM (Kernel Virtual Machine) subsystem of the Linux kernel was discovered. A guest OS user could exploit this flaw to cause a denial of service (guest OS crash) via a specially crafted application,”
The Kernel packages will force you to reinstall and recompile all third-party Kernel modules installed on the system. The Kernel for other Ubuntu derivatives have also been updated.
It is worth mentioning that the Ubuntu 15.04 (Vivid Vervet) is based on Linux Kernel 3.18.2.