guix-devel/gnu/packages/patches/libtiff-CVE-2016-3623.patch

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Fix CVE-2016-3623.
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-3623
http://bugzilla.maptools.org/show_bug.cgi?id=2569
Patch extracted from upstream CVS repo with:
$ cvs diff -u -r1.16 -r1.17 tools/rgb2ycbcr.c
Index: tools/rgb2ycbcr.c
===================================================================
RCS file: /cvs/maptools/cvsroot/libtiff/tools/rgb2ycbcr.c,v
retrieving revision 1.16
retrieving revision 1.17
diff -u -r1.16 -r1.17
--- libtiff/tools/rgb2ycbcr.c 21 Jun 2015 01:09:10 -0000 1.16
+++ libtiff/tools/rgb2ycbcr.c 15 Aug 2016 21:26:56 -0000 1.17
@@ -95,9 +95,13 @@
break;
case 'h':
horizSubSampling = atoi(optarg);
+ if( horizSubSampling != 1 && horizSubSampling != 2 && horizSubSampling != 4 )
+ usage(-1);
break;
case 'v':
vertSubSampling = atoi(optarg);
+ if( vertSubSampling != 1 && vertSubSampling != 2 && vertSubSampling != 4 )
+ usage(-1);
break;
case 'r':
rowsperstrip = atoi(optarg);