USN-3220-3: Linux kernel (AWS) vulnerability
9 March 2017
The system could be made to crash or run programs as an administrator.
Releases
Packages
- linux-aws - Linux kernel for Amazon Web Services (AWS) systems
Details
USN-3220-1 fixed a vulnerability in the Linux kernel. This update
provides the corresponding updates for the Linux kernel for Amazon
Web Services (AWS).
Alexander Popov discovered that the N_HDLC line discipline implementation
in the Linux kernel contained a double-free vulnerability. A local attacker
could use this to cause a denial of service (system crash) or possibly gain
administrative privileges.
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 16.04
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.
References
Related notices
- USN-3220-2: linux-image-4.4.0-66-powerpc-e500mc, linux-image-4.4.0-66-lowlatency, linux-lts-xenial, linux-image-4.4.0-66-powerpc64-smp, linux-image-4.4.0-66-generic, linux-image-4.4.0-66-powerpc-smp, linux-image-4.4.0-66-powerpc64-emb, linux-image-4.4.0-66-generic-lpae, linux-image-extra-4.4.0-66-generic
- USN-3220-1: linux-image-4.4.0-66-powerpc-e500mc, linux-image-4.4.0-66-lowlatency, linux-image-4.4.0-66-powerpc64-smp, linux-image-4.4.0-66-generic, linux-raspi2, linux-image-4.4.0-66-powerpc-smp, linux-image-4.4.0-1050-snapdragon, linux, linux-image-4.4.0-66-powerpc64-emb, linux-image-extra-4.4.0-1005-gke, linux-gke, linux-snapdragon, linux-image-4.4.0-1046-raspi2, linux-image-4.4.0-66-generic-lpae, linux-image-4.4.0-1005-gke, linux-image-extra-4.4.0-66-generic
- USN-3221-2: linux-image-4.8.0-41-generic, linux-image-extra-4.8.0-41-generic, linux-image-4.8.0-41-generic-lpae, linux-hwe, linux-image-4.8.0-41-lowlatency
- USN-3219-1: linux-image-3.13.0-112-powerpc64-smp, linux-image-3.13.0-112-lowlatency, linux-image-3.13.0-112-powerpc-e500, linux, linux-image-3.13.0-112-generic-lpae, linux-image-3.13.0-112-powerpc-smp, linux-image-3.13.0-112-powerpc-e500mc, linux-image-extra-3.13.0-112-generic, linux-image-3.13.0-112-powerpc64-emb, linux-image-3.13.0-112-generic
- USN-3219-2: linux-lts-trusty, linux-image-generic-lts-trusty, linux-image-generic-lpae-lts-trusty, linux-image-3.13.0-112-generic-lpae, linux-image-3.13.0-112-generic
- USN-3218-1: linux-image-omap, linux-image-3.2.0-124-generic, linux-image-3.2.0-124-powerpc-smp, linux-image-3.2.0-124-highbank, linux-image-generic-pae, linux-image-omap4, linux-ti-omap4, linux-image-3.2.0-124-powerpc64-smp, linux-image-3.2.0-1502-omap4, linux-image-generic, linux-image-highbank, linux, linux-image-powerpc-smp, linux-image-powerpc64-smp, linux-image-3.2.0-124-virtual, linux-image-3.2.0-124-generic-pae, linux-image-virtual, linux-image-3.2.0-124-omap
- USN-3221-1: linux-image-4.8.0-41-generic, linux-image-lowlatency, linux-image-generic-lpae, linux-image-4.8.0-41-generic-lpae, linux-image-powerpc-e500mc, linux-image-raspi2, linux-raspi2, linux-image-4.8.0-41-powerpc-smp, linux-image-4.8.0-41-powerpc64-emb, linux-image-generic, linux-image-powerpc64-emb, linux, linux-image-powerpc-smp, linux-image-4.8.0-41-powerpc-e500mc, linux-image-4.8.0-1028-raspi2, linux-image-4.8.0-41-lowlatency