Source Digit

Linux, Ubuntu Tutorials & News, Technology, Gadgets & Gizmos

Home / How To / Update Ubuntu 16.04 To Fix Ubuntu 16.04 Linux Kernel Vulnerabilities

Update Ubuntu 16.04 To Fix Ubuntu 16.04 Linux Kernel Vulnerabilities

By Sourabh /  Category: How To, Ubuntu

Ubuntu 16.04 Linux Kernel Vulnerabilities. Update Ubuntu 16.04 immediately as Canonical has published a new security notice to patch Linux Kernel Vulnerabilities for Ubuntu 16.04 LTS (Xenial Xerus).

USN-3016-1: Linux kernel vulnerabilities

Ubuntu Security Notice USN-3016-1 explains that a total of seven Linux kernel vulnerabilities have been found and then fixed in the updated kernel packages for Ubuntu 16.04 LTS.

update-linux-ubuntu

Ubuntu Security Notice USN-3016-1

    • 27th June, 2016 – Linux vulnerabilities – A security issue affects these releases of Ubuntu 16.04 LTS and its derivatives. The update brings several security issues that has been fixed in the Kernel.

The security notice explains:

  1. Jesse Hertz and Tim Newsham discovered that the Linux netfilter implementation did not correctly perform validation when handling 32 bit compatibility IPT_SO_SET_REPLACE events on 64 bit platforms. A local unprivileged attacker could use this to cause a denial of service (system crash) or execute arbitrary code with administrative privileges.
  2. Kangjie Lu discovered an information leak in the core USB implementation in the Linux kernel. A local attacker could use this to obtain potentially sensitive information from kernel memory.
  3. It was discovered that an information leak exists in the Rock Ridge implementation in the Linux kernel. A local attacker who is able to mount a malicious iso9660 file system image could exploit this flaw to obtain potentially sensitive information from kernel memory.

Read more on http://www.ubuntu.com/usn/usn-3016-1/

Update instructions

The problem can be corrected by updating your system to the following package version:

Ubuntu 16.04 LTS:
linux-image-4.4.0-28-powerpc64-smp 4.4.0-28.47
linux-image-4.4.0-28-lowlatency 4.4.0-28.47
linux-image-4.4.0-28-powerpc-smp 4.4.0-28.47
linux-image-4.4.0-28-generic-lpae 4.4.0-28.47
linux-image-4.4.0-28-powerpc64-emb 4.4.0-28.47
linux-image-4.4.0-28-generic 4.4.0-28.47
linux-image-4.4.0-28-powerpc-e500mc 4.4.0-28.47

To update your system, please run the following commands in Terminal:

$ sudo apt-get update
$ sudo apt-get dist-upgrade

When performing an update, please review the update and then confirm. Please restart the system after the update.