void-packages/srcpkgs/tiff/patches/CVE-2016-10095_CVE-2017-9147.patch

diff --git a/libtiff/tif_dir.h b/libtiff/tif_dir.h
index e12b44b2..5206be49 100644
--- libtiff/tif_dir.h
+++ libtiff/tif_dir.h
@@ -291,6 +291,7 @@ struct _TIFFField {
 extern int _TIFFMergeFields(TIFF*, const TIFFField[], uint32);
 extern const TIFFField* _TIFFFindOrRegisterField(TIFF *, uint32, TIFFDataType);
 extern  TIFFField* _TIFFCreateAnonField(TIFF *, uint32, TIFFDataType);
+extern int _TIFFCheckFieldIsValidForCodec(TIFF *tif, ttag_t tag);
 
 #if defined(__cplusplus)
 }
diff --git a/libtiff/tif_dirinfo.c b/libtiff/tif_dirinfo.c
index 0c8ef424..97c0df05 100644
--- libtiff/tif_dirinfo.c
+++ libtiff/tif_dirinfo.c
@@ -956,6 +956,109 @@ TIFFMergeFieldInfo(TIFF* tif, const TIFFFieldInfo info[], uint32 n)
 	return 0;
 }
 
+int
+_TIFFCheckFieldIsValidForCodec(TIFF *tif, ttag_t tag)
+{
+	/* Filter out non-codec specific tags */
+	switch (tag) {
+	    /* Shared tags */
+	    case TIFFTAG_PREDICTOR:
+	    /* JPEG tags */
+	    case TIFFTAG_JPEGTABLES:
+	    /* OJPEG tags */
+	    case TIFFTAG_JPEGIFOFFSET:
+	    case TIFFTAG_JPEGIFBYTECOUNT:
+	    case TIFFTAG_JPEGQTABLES:
+	    case TIFFTAG_JPEGDCTABLES:
+	    case TIFFTAG_JPEGACTABLES:
+	    case TIFFTAG_JPEGPROC:
+	    case TIFFTAG_JPEGRESTARTINTERVAL:
+	    /* CCITT* */
+	    case TIFFTAG_BADFAXLINES:
+	    case TIFFTAG_CLEANFAXDATA:
+	    case TIFFTAG_CONSECUTIVEBADFAXLINES:
+	    case TIFFTAG_GROUP3OPTIONS:
+	    case TIFFTAG_GROUP4OPTIONS:
+		break;
+	    default:
+		return 1;
+	}
+	/* Check if codec specific tags are allowed for the current
+	 * compression scheme (codec) */
+	switch (tif->tif_dir.td_compression) {
+	    case COMPRESSION_LZW:
+		if (tag == TIFFTAG_PREDICTOR)
+		    return 1;
+		break;
+	    case COMPRESSION_PACKBITS:
+		/* No codec-specific tags */
+		break;
+	    case COMPRESSION_THUNDERSCAN:
+		/* No codec-specific tags */
+		break;
+	    case COMPRESSION_NEXT:
+		/* No codec-specific tags */
+		break;
+	    case COMPRESSION_JPEG:
+		if (tag == TIFFTAG_JPEGTABLES)
+		    return 1;
+		break;
+	    case COMPRESSION_OJPEG:
+		switch (tag) {
+		    case TIFFTAG_JPEGIFOFFSET:
+		    case TIFFTAG_JPEGIFBYTECOUNT:
+		    case TIFFTAG_JPEGQTABLES:
+		    case TIFFTAG_JPEGDCTABLES:
+		    case TIFFTAG_JPEGACTABLES:
+		    case TIFFTAG_JPEGPROC:
+		    case TIFFTAG_JPEGRESTARTINTERVAL:
+			return 1;
+		}
+		break;
+	    case COMPRESSION_CCITTRLE:
+	    case COMPRESSION_CCITTRLEW:
+	    case COMPRESSION_CCITTFAX3:
+	    case COMPRESSION_CCITTFAX4:
+		switch (tag) {
+		    case TIFFTAG_BADFAXLINES:
+		    case TIFFTAG_CLEANFAXDATA:
+		    case TIFFTAG_CONSECUTIVEBADFAXLINES:
+			return 1;
+		    case TIFFTAG_GROUP3OPTIONS:
+			if (tif->tif_dir.td_compression == COMPRESSION_CCITTFAX3)
+			    return 1;
+			break;
+		    case TIFFTAG_GROUP4OPTIONS:
+			if (tif->tif_dir.td_compression == COMPRESSION_CCITTFAX4)
+			    return 1;
+			break;
+		}
+		break;
+	    case COMPRESSION_JBIG:
+		/* No codec-specific tags */
+		break;
+	    case COMPRESSION_DEFLATE:
+	    case COMPRESSION_ADOBE_DEFLATE:
+		if (tag == TIFFTAG_PREDICTOR)
+		    return 1;
+		break;
+	   case COMPRESSION_PIXARLOG:
+		if (tag == TIFFTAG_PREDICTOR)
+		    return 1;
+		break;
+	    case COMPRESSION_SGILOG:
+	    case COMPRESSION_SGILOG24:
+		/* No codec-specific tags */
+		break;
+	    case COMPRESSION_LZMA:
+		if (tag == TIFFTAG_PREDICTOR)
+		    return 1;
+		break;
+
+	}
+	return 0;
+}
+
 /* vim: set ts=8 sts=8 sw=8 noet: */
 
 /*
diff --git a/libtiff/tif_dirread.c b/libtiff/tif_dirread.c
index 1d4f0b9a..f1dc3d79 100644
--- libtiff/tif_dirread.c
+++ libtiff/tif_dirread.c
@@ -3580,6 +3580,10 @@ TIFFReadDirectory(TIFF* tif)
 							goto bad;
 						dp->tdir_tag=IGNORE;
 						break;
+                                        default:
+                                            if( !_TIFFCheckFieldIsValidForCodec(tif, dp->tdir_tag) )
+                                                dp->tdir_tag=IGNORE;
+                                            break;
 				}
 			}
 		}