Ubuntu Security Notice 448-1 - 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. 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.
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