USN-3187-1: Linux kernel vulnerabilities
3 February 2017
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 12.04 LTS
Several security issues were fixed in the kernel.
- linux - Linux kernel
Andrey Konovalov discovered that the SCTP implementation in the Linux kernel improperly handled validation of incoming data. A remote attacker could use this to cause a denial of service (system crash). (CVE-2016-9555)
It was discovered that multiple memory leaks existed in the XFS implementation in the Linux kernel. A local attacker could use this to cause a denial of service (memory consumption). (CVE-2016-9685)
The problem can be corrected by updating your system to the following package versions:
- Ubuntu 12.04 LTS
- linux-image-3.2.0-121-generic - 3.2.0-121.164
- linux-image-3.2.0-121-generic-pae - 3.2.0-121.164
- linux-image-3.2.0-121-highbank - 3.2.0-121.164
- linux-image-3.2.0-121-omap - 3.2.0-121.164
- linux-image-3.2.0-121-powerpc-smp - 3.2.0-121.164
- linux-image-3.2.0-121-powerpc64-smp - 3.2.0-121.164
- linux-image-3.2.0-121-virtual - 3.2.0-121.164
- linux-image-generic - 126.96.36.199.136
- linux-image-generic-pae - 188.8.131.52.136
- linux-image-highbank - 184.108.40.206.136
- linux-image-omap - 220.127.116.11.136
- linux-image-powerpc-smp - 18.104.22.168.136
- linux-image-powerpc64-smp - 22.214.171.124.136
- linux-image-virtual - 126.96.36.199.136
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
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.