--- tiff-4.0.6/libtiff/tif_luv.c	2015-08-29 00:16:22.554966897 +0200
+++ tiff-4.0.6/libtiff/tif_luv.c	2016-07-12 10:15:05.008194511 +0200
@@ -1243,6 +1243,14 @@
 	assert(sp != NULL);
 	assert(td->td_photometric == PHOTOMETRIC_LOGL);
 
+	if( td->td_samplesperpixel != 1 )
+	{
+		TIFFErrorExt(tif->tif_clientdata, module,
+		             "Sorry, can not handle LogL image with %s=%d",
+			     "Samples/pixel", td->td_samplesperpixel);
+		return 0;
+	}
+
 	/* for some reason, we can't do this in TIFFInitLogL16 */
 	if (sp->user_datafmt == SGILOGDATAFMT_UNKNOWN)
 		sp->user_datafmt = LogL16GuessDataFmt(td);