Adobe Reader allows users to view and print documents in Portable DocumentFormat (PDF).Multiple input validation flaws were discovered in the JBIG2 compressedimages decoder used by Adobe Reader. A malicious PDF file could cause AdobeReader to crash or, potentially, execute arbitrary code as the user runningAdobe Reader. (CVE-2009-0193, CVE-2009-0658, CVE-2009-0928, CVE-2009-1061,CVE-2009-1062)All Adobe Reader users should install these updated packages. They containAdobe Reader version 8.1.4, which is not vulnerable to these issues. Allrunning instances of Adobe Reader must be restarted for the update to takeeffect.