Jon Larimer from IBM X-Force Advanced Research discovered multiple vulnerabilities in the DVI backend of the evince document viewer: CVE-2010-2640 Insuficient array bounds checks in the PK fonts parser could lead to function pointer overwrite, causing arbitrary code execution. CVE-2010-2641 Insuficient array bounds checks in the PK fonts parser could lead to function pointer overwrite, causing arbitrary code execution. CVE-2010-2642 Insuficient bounds checks in the AFM fonts parser when writing data to a memory buffer allocated on heap could lead to arbitrary memory overwrite and arbitrary code execution. CVE-2010-2643 Insuficient check on an integer used as a size for memory allocation can lead to arbitrary write outside the allocated range and cause arbitrary code execution.