How to install Kernel 4.3.2 on Ubuntu 15.10, Ubuntu 14.04 and Derivatives. Linux Kernel 4.3.2 has been released with fix for bug in X.509 certificates. Greg Kroah-Hartman has released the 4.3.2 stable kernel. It fixes a problem with time validation in X.509 certificate handling that has been present since 4.3.0 (CVE-2015-5327). If you are not using those certificates, though, you don’t need to upgrade from 4.3.1; others should upgrade.
Announcing the release of Linux Kernel 4.3.2, Greg Kroah-Hartman wrote:
I’m announcing the release of the 4.3.2 kernel. This release fixes a bug with regards to X.509 certificates, more details can be found in the commit log. If you don’t use these certificates, no need to upgrade from 4.3.1. Note, the bug is also in 4.3.0, it is not new in 4.3.1.
The updated 4.3.y git tree can be found at:
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git linux-4.3.y
and can be browsed at the normal kernel.org git web browser:
http://git.kernel.org/?p=linux/kernel/git/stable/linux-stable.git;a=summary
Install Kernel 4.3.2 on 32 bit Ubuntu Systems
Run the following command in Terminal to install Kernel 4.3.2 on 32 bit Ubuntu Systems:
$ cd /tmp
$ wget \
kernel.ubuntu.com/~kernel-ppa/mainline/v4.3.2-wily/linux-headers-4.3.2-040302_4.3.2-040302.201512101931_all.deb \
kernel.ubuntu.com/~kernel-ppa/mainline/v4.3.2-wily/linux-headers-4.3.2-040302-generic_4.3.2-040302.201512101931_i386.deb \
kernel.ubuntu.com/~kernel-ppa/mainline/v4.3.2-wily/linux-image-4.3.2-040302-generic_4.3.2-040302.201512101931_i386.deb
$ sudo dpkg -i linux-headers-4.3*.deb linux-image-4.3*.deb
Install Kernel 4.3.2 on 64 bit Ubuntu Systems
Run the following command in Terminal to install Kernel 4.3.2 on 64 bit Ubuntu Systems:
$ cd /tmp
$ wget \
kernel.ubuntu.com/~kernel-ppa/mainline/v4.3.2-wily/linux-headers-4.3.2-040302_4.3.2-040302.201512101931_all.deb \
kernel.ubuntu.com/~kernel-ppa/mainline/v4.3.2-wily/linux-headers-4.3.2-040302-generic_4.3.2-040302.201512101931_amd64.deb \
kernel.ubuntu.com/~kernel-ppa/mainline/v4.3.2-wily/linux-image-4.3.2-040302-generic_4.3.2-040302.201512101931_amd64.deb
$ sudo dpkg -i linux-headers-4.3*.deb linux-image-4.3*.deb
Uninstall Kernel 4.3.2 from Ubuntu Systems
Run the following command in Terminal to uninstall and remove Linux Kernel 4.3.2 from Ubuntu Systems:
$ sudo apt-get remove linux-headers-4.3* linux-image-4.3*