USN-3206-1: Linux kernel vulnerabilities
22 February 2017
linux, linux-ti-omap4 vulnerabilities
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
- linux-ti-omap4 - Linux kernel for OMAP4
It was discovered that a use-after-free vulnerability existed in the block device layer of the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly gain administrative privileges. (CVE-2016-7910)
Dmitry Vyukov discovered a use-after-free vulnerability in the sys_ioprio_get() function in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly gain administrative privileges. (CVE-2016-7911)
Andrey Konovalov discovered a use-after-free vulnerability in the DCCP implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly gain administrative privileges. (CVE-2017-6074)
The problem can be corrected by updating your system to the following package versions:
- Ubuntu 12.04 LTS
- linux-image-3.2.0-123-generic - 3.2.0-123.166
- linux-image-3.2.0-123-generic-pae - 3.2.0-123.166
- linux-image-3.2.0-123-highbank - 3.2.0-123.166
- linux-image-3.2.0-123-omap - 3.2.0-123.166
- linux-image-3.2.0-123-powerpc-smp - 3.2.0-123.166
- linux-image-3.2.0-123-powerpc64-smp - 3.2.0-123.166
- linux-image-3.2.0-123-virtual - 3.2.0-123.166
- linux-image-3.2.0-1501-omap4 - 3.2.0-1501.128
- linux-image-generic - 18.104.22.168.138
- linux-image-generic-pae - 22.214.171.124.138
- linux-image-highbank - 126.96.36.199.138
- linux-image-omap - 188.8.131.52.138
- linux-image-omap4 - 184.108.40.2061.96
- linux-image-powerpc-smp - 220.127.116.11.138
- linux-image-powerpc64-smp - 18.104.22.168.138
- linux-image-virtual - 22.214.171.124.138
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.