14 DAY TRIAL // Canonical has said that a number of Oxide vulnerabilities have been found and fixed in its Ubuntu 14.04 LTS (Trusty Tahr) operating system.
These particular problems have been corrected only in Ubuntu 14.04 LTS, and the other supported OSes haven't been affected by this issue.
“A type confusion bug was discovered in V8. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to cause a denial of service via renderer crash, or execute arbitrary code with the privileges of the sandboxed render process,” reads the security notice.
Also, “An out-of-bounds read was discovered in Chromium. If a user were tricked in to opening a specially crafter website, an attacker could potentially exploit this to cause a denial of service via application crash.”
These are just a couple of the vulnerabilities found and fixed, and for a more detailed description of the problems you can see Canonical's security notification. Users are advised to upgrade their systems as soon as possible.
The flaws can be fixed if you upgrade your system(s) to the latest php5 packages specific to each distribution. To apply the patch, run the Update Manager application.
In general, a standard system update will make all the necessary changes and users won't have to restart the PC or laptop in order to apply the patch.