Ubuntu Update for Linux kernel vulnerabilities USN-1628-1
Please Install the Updated Packages.
Juliano Rizzo and Thai Duong discovered a flaw in the Transport Layer Security (TLS) protocol when it is used with data compression. If an attacker were able to perform a man-in-the-middle attack, this flaw could be exploited to view sensitive information. This update disables TLS data compression in Qt by default.
qt4-x11 on Ubuntu 12.04 LTS , Ubuntu 11.10 , Ubuntu 10.04 LTS