14 DAY TRIAL // On June 18, in a security notice, Canonical published details about a LibRaw vulnerability for its Ubuntu 13.04, Ubuntu 12.10, and Ubuntu 12.04 LTS operating systems.
According to Canonical, LibRaw could be made to crash or run programs as the user’s login if it opened a specially crafted file.
It was discovered that LibRaw incorrectly handled broken full-color images. If a user or automated system were tricked into processing a specially crafted raw image, applications linked against LibRaw could be made to crash, resulting in a denial of service, or possibly execute arbitrary code.
For a more detailed description of the security problems, you can visit Canonical's security notification.
The security flaws can be fixed if you upgrade your system(s) to the latest libraw5 package, specific to each distribution. To apply the update, run the Update Manager application.
In general, a standard system update will make all the necessary changes. A system restart will not be necessary to implement the changes.