Gentoo Linux Security Advisory GLSA 200703-19 - The LTSP server includes vulnerable LibVNCServer code, which fails to properly validate protocol types effectively letting users decide what protocol to use, such as Type 1 - None (GLSA-200608-05). The LTSP VNC server will accept this security type, even if it is not offered by the server. Versions less than 4.2-r1 are affected.
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SUSE Security Announcement SUSE-SA:2006:042 - A slew of kernel related vulnerabilities has been fixed in SUSE Linux for the 2.6 series.
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