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 3 and 4provide both the FreeType 1 and FreeType 2 font engines. The freetypepackages for Red Hat Enterprise Linux 5 provide only the FreeType 2 fontengine.Two stack overflow flaws were found in the way the FreeType font engineprocessed certain Compact Font Format (CFF) character strings (opcodes). Ifa user loaded a specially-crafted font file with an application linkedagainst FreeType, it could cause the application to crash or, possibly,execute arbitrary code with the privileges of the user running theapplication. (CVE-2010-1797)Red Hat would like to thank Braden Thomas of the Apple Product Securityteam for reporting these issues.Note: CVE-2010-1797 only affects the FreeType 2 font engine.Users are advised to upgrade to these updated packages, which contain abackported patch to correct these issues. The X server must be restarted(log out, then log back in) for this update to take effect.