optipng optipng uses pointers after free (CVE-2009-0749) optipng uses pointers after free (CVE-2009-0749) OptiPNG contained a bug in the GIF handling code that allowed to use already freed ressources. CVE-2009-0749 has been assigned to this issue. OptiPNG contained a bug in the GIF handling code that allowed to use already freed ressources. CVE-2009-0749 has been assigned to this issue. security optipng i586 9e8e64d8915791524e3c0255db751dc47673a472 optipng ppc 2b98806fe5161231a9cc29599e9ab42e4c3ee44a optipng x86_64 28078f95eb9fad0a04456ce0457e0c3fb1a3621b