commit a1d523c27dafafadf589c77e834c52661f1c78fc
Author: erouault <erouault>
Date:   Sat Dec 3 14:18:48 2016 +0000

    * tools/tiffinfo.c: fix null pointer dereference in -r mode when the image has
    no StripByteCount tag.
    Reported by Agostino Sarubbo.
    Fixes http://bugzilla.maptools.org/show_bug.cgi?id=2594

diff --git a/ChangeLog b/ChangeLog
index dd27c7f..e41d00c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,12 @@
 2016-12-03 Even Rouault <even.rouault at spatialys.com>
 
+	* tools/tiffinfo.c: fix null pointer dereference in -r mode when the image has
+	no StripByteCount tag.
+	Reported by Agostino Sarubbo.
+	Fixes http://bugzilla.maptools.org/show_bug.cgi?id=2594
+
+2016-12-03 Even Rouault <even.rouault at spatialys.com>
+
 	* tools/tiffcrop.c: fix integer division by zero when BitsPerSample is missing.
 	Reported by Agostino Sarubbo.
 	Fixes http://bugzilla.maptools.org/show_bug.cgi?id=2619
diff --git a/tools/tiffinfo.c b/tools/tiffinfo.c
index b02c7d4..4d58055 100644
--- a/tools/tiffinfo.c
+++ b/tools/tiffinfo.c
@@ -1,4 +1,4 @@
-/* $Id: tiffinfo.c,v 1.25 2016-11-12 20:06:05 bfriesen Exp $ */
+/* $Id: tiffinfo.c,v 1.26 2016-12-03 14:18:49 erouault Exp $ */
 
 /*
  * Copyright (c) 1988-1997 Sam Leffler
@@ -417,7 +417,7 @@ TIFFReadRawData(TIFF* tif, int bitrev)
 	uint64* stripbc=NULL;
 
 	TIFFGetField(tif, TIFFTAG_STRIPBYTECOUNTS, &stripbc);
-	if (nstrips > 0) {
+	if (stripbc != NULL && nstrips > 0) {
 		uint32 bufsize = (uint32) stripbc[0];
 		tdata_t buf = _TIFFmalloc(bufsize);
 		tstrip_t s;