Details of a number of libxml2 vulnerabilities that have been found and fixed in Ubuntu 15.10, Ubuntu 15.04, Ubuntu 14.04 LTS, and Ubuntu 12.04 LTS have been published Ubuntu security notice blog. According to the summary – “Several security issues were fixed in libxml2.“ libxml2 incorrectly handled certain XML data. If a user or automated system were tricked into opening a specially crafted document, an attacker could possibly cause resource consumption, resulting in a denial of service.
Canonical had just reported that a number of vulnerabilities found in Ubuntu 14.04 LTS Linux Kernel had been fixed. According to Matthew Daley’s report, the following vulnerabilities where identified and fixed: An information leak in the floppy disk driver of the Linux kernel. An unprivileged local user could exploit this flaw to obtain potentially sensitive information from kernel memory A flaw in the handling of ioctl commands by the floppy disk driver in the Linux kernel.
This article is a step by step tutorial on how to upgrade your Ubuntu 12.04 LTS Precise Pangolin to Ubuntu 14.04 Trusty Tahr. This upgrade is been carried out on a VirtualBox, I cannot guaranty if this would work in your case or not. Care needs to be taken if upgrading a LIVE system. Step 1: Backup your Data – I am afraid you would have to backup your files and documents.
With the release of Ubuntu 14.04 Trusty Tahr on April 17th 2014, its now time for an upgrade. Upgrading from Ubuntu 13.10 saucy salamander to 14.04 trusty tahr is quite easy and simple to accomplish but would require a lot of patients. I have outlined below best and recommended approach to achieving this: Note: Before performing any upgrade, it is advisable to backup your documents as you may run into upgrade issues with problematic applications and previous updates which may cause cause issues.