--- libwmf-0.2.8.4/src/extra/gd/gd_png.c.cve-2007-2756 2007-06-13 11:20:03.000000000 -0600 +++ libwmf-0.2.8.4/src/extra/gd/gd_png.c 2007-06-13 11:21:58.000000000 -0600 @@ -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