Please Install the Updated Packages.

It was discovered that OpenJDK did not properly validate certain types of images. A remote attacker could exploit this to cause OpenJDK to crash. (CVE-2013-0809) It was discovered that OpenJDK did not properly check return values when performing color conversion for images. If a user were tricked into opening a crafted image with OpenJDK, such as with the Java plugin, a remote attacker could cause OpenJDK to crash or execute arbitrary code outside of the Java sandbox with the privileges of the user invoking the program. (CVE-2013-1493)

openjdk-6 on Ubuntu 12.04 LTS , Ubuntu 11.10 , Ubuntu 10.04 LTS