The giflib packages contain a shared library of functions for loading andsaving GIF image files. This library is API and ABI compatible withlibungif, the library that supported uncompressed GIF image files while theUnisys LZW patent was in effect.Several flaws were discovered in the way giflib decodes GIF images. Anattacker could create a carefully crafted GIF image that could cause anapplication using giflib to crash or, possibly, execute arbitrary code whenopened by a victim. (CVE-2005-2974, CVE-2005-3350)All users of giflib are advised to upgrade to these updated packages, whichcontain backported patches to resolve these issues. All runningapplications using giflib must be restarted for the update to take effect.