Ubuntu security bulletins (USN-513-1 - QT libraries)

USN-513-1: QT libraries possible buffer overflows
Threat-level (*): Less-than-moderate

Affected Ubuntu versions:

• Ubuntu 6.06 LTS
• Ubuntu 6.10
• Ubuntu 7.04
• (and the corresponding versions of Kubuntu, Edubuntu, and Xubuntu)

Notice that QT3 libraries are used by all KD3-based applications.
It's recommended that you perform (at least) a standard upgrade of your system to avoid possible:

• Attacks based on specially crafted UTF-8 strings that can lead to small buffer overflows, with the following possible consequences:
• arbitrary code execution
  
• denial of service

After the upgrade for the changes to affect your system you need to restart your user-session (i.e. log-out and then re-log-in to your system).

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(*) = IMHO = It's just my opinion...