Ubuntu Update for freetype, libxfont, xorg, xorg-server vulnerabilities USN-448-1

Summary
Ubuntu Update for Linux kernel vulnerabilities USN-448-1
Solution
Please Install the Updated Packages.
Insight
Sean Larsson of iDefense Labs discovered that the MISC-XC extension of Xorg did not correctly verify the size of allocated memory. An authenticated user could send a specially crafted X11 request and execute arbitrary code with root privileges. (CVE-2007-1003) Greg MacManus of iDefense Labs discovered that the BDF font handling code in Xorg and FreeType did not correctly verify the size of allocated memory. If a user were tricked into using a specially crafted font, a remote attacker could execute arbitrary code with root privileges. (CVE-2007-1351, CVE-2007-1352)
Affected
freetype, libxfont, xorg, xorg-server vulnerabilities on Ubuntu 5.10 , Ubuntu 6.06 LTS , Ubuntu 6.10