Copied from Fedora. http://pkgs.fedoraproject.org/cgit/libwmf.git/tree/libwmf-0.2.8.4-CVE-2007-2756.patch --- libwmf-0.2.8.4/src/extra/gd/gd_png.c 1 Apr 2007 20:41:01 -0000 1.21.2.1 +++ libwmf-0.2.8.4/src/extra/gd/gd_png.c 16 May 2007 19:06:11 -0000 @@ -78,8 +78,11 @@ gdPngReadData (png_structp png_ptr, png_bytep data, png_size_t length) { - gdGetBuf (data, length, (gdIOCtx *) - png_get_io_ptr (png_ptr)); + int check; + check = gdGetBuf (data, length, (gdIOCtx *) png_get_io_ptr (png_ptr)); + if (check != length) { + png_error(png_ptr, "Read Error: truncated data"); + } } static void