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Fix NULL pointer dereference in TIFFReadRawData():
http://bugzilla.maptools.org/show_bug.cgi?id=2594
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
/cvs/maptools/cvsroot/libtiff/ChangeLog,v <-- ChangeLog
new revision: 1.1182; previous revision: 1.1181
/cvs/maptools/cvsroot/libtiff/tools/tiffinfo.c,v <-- tools/tiffinfo.c
new revision: 1.26; previous revision: 1.25
Index: libtiff/tools/tiffinfo.c
===================================================================
RCS file: /cvs/maptools/cvsroot/libtiff/tools/tiffinfo.c,v
retrieving revision 1.25
retrieving revision 1.26
diff -u -r1.25 -r1.26
--- libtiff/tools/tiffinfo.c 12 Nov 2016 20:06:05 -0000 1.25
+++ libtiff/tools/tiffinfo.c 3 Dec 2016 14:18:49 -0000 1.26
@@ -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 @@
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;
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