http://pkgs.fedoraproject.org/cgit/libtiff.git/plain/libtiff-CVE-2013-4232.patch
http://bugs.gentoo.org/480466

--- tools/tiff2pdf.c
+++ tools/tiff2pdf.c
@@ -2462,6 +2462,7 @@ tsize_t t2p_readwrite_pdf_image(T2P* t2p, TIFF* input, TIFF* output){
 					TIFFFileName(input));
 				t2p->t2p_error = T2P_ERR_ERROR;
 			  _TIFFfree(buffer);
+			  return(0);
 			} else {
 				buffer=samplebuffer;
 				t2p->tiff_datasize *= t2p->tiff_samplesperpixel;