commit 14ffb69a5892fcfff6c72e73af74565467ab6ae9
Author: Even Rouault <even.rouault@spatialys.com>
Date:   Wed Aug 15 16:34:40 2018 +0200

    TIFFSetupStrips(): avoid potential uint32 overflow on 32-bit systems with large number of strips. Probably relates to http://bugzilla.maptools.org/show_bug.cgi?id=2788 / CVE-2018-10779

diff --git a/libtiff/tif_write.c b/libtiff/tif_write.c
index 4c216ec..208a2ee 100644
--- a/libtiff/tif_write.c
+++ b/libtiff/tif_write.c
@@ -540,9 +540,11 @@ TIFFSetupStrips(TIFF* tif)
 	if (td->td_planarconfig == PLANARCONFIG_SEPARATE)
 		td->td_stripsperimage /= td->td_samplesperpixel;
 	td->td_stripoffset = (uint64 *)
-	    _TIFFmalloc(td->td_nstrips * sizeof (uint64));
+            _TIFFCheckMalloc(tif, td->td_nstrips, sizeof (uint64),
+                             "for \"StripOffsets\" array");
 	td->td_stripbytecount = (uint64 *)
-	    _TIFFmalloc(td->td_nstrips * sizeof (uint64));
+            _TIFFCheckMalloc(tif, td->td_nstrips, sizeof (uint64),
+                             "for \"StripByteCounts\" array");
 	if (td->td_stripoffset == NULL || td->td_stripbytecount == NULL)
 		return (0);
 	/*