compat-libtiff3/libtiff-3samples.patch

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2021-02-22 17:45:06 +00:00
Patch for bug #603081: failure to guard against bogus SamplesPerPixel
when converting a YCbCr image to RGB.
This patch duplicates into PickContigCase() a safety check that already
existed in PickSeparateCase().
Filed upstream at http://bugzilla.maptools.org/show_bug.cgi?id=2216
diff -Naur tiff-3.9.2.orig/libtiff/tif_getimage.c tiff-3.9.2/libtiff/tif_getimage.c
--- tiff-3.9.2.orig/libtiff/tif_getimage.c 2009-08-30 12:21:46.000000000 -0400
+++ tiff-3.9.2/libtiff/tif_getimage.c 2010-06-11 12:06:47.000000000 -0400
@@ -2397,7 +2397,7 @@
}
break;
case PHOTOMETRIC_YCBCR:
- if (img->bitspersample == 8)
+ if ((img->bitspersample==8) && (img->samplesperpixel==3))
{
if (initYCbCrConversion(img)!=0)
{