FreeType is a free, high-quality, portable font engine that can open andmanage font files. It also loads, hints, and renders individual glyphsefficiently. The freetype packages for Red Hat Enterprise Linux 4 provideboth the FreeType 1 and FreeType 2 font engines. The freetype packages forRed Hat Enterprise Linux 5 and 6 provide only the FreeType 2 font engine.A heap-based buffer overflow flaw was found in the way the FreeType fontrendering engine processed certain TrueType GX fonts. If a user loaded aspecially-crafted font file with an application linked against FreeType, itcould cause the application to crash or, possibly, execute arbitrary codewith the privileges of the user running the application. (CVE-2010-3855)Note: This issue only affects the FreeType 2 font engine.Users are advised to upgrade to these updated packages, which contain abackported patch to correct this issue. The X server must be restarted (logout, then log back in) for this update to take effect.