guix/gnu/packages/patches/libtiff-CVE-2014-8128-pt3.patch

Copied from Debian

From 266bc48054b018a2f1d74562aa48eb2f509436d5 Mon Sep 17 00:00:00 2001
From: erouault <erouault>
Date: Sun, 21 Dec 2014 17:36:36 +0000
Subject: [PATCH] * tools/tiff2pdf.c: check return code of TIFFGetField() when
 reading TIFFTAG_SAMPLESPERPIXEL

---
 ChangeLog        |  5 +++++
 tools/tiff2pdf.c | 10 +++++++++-
 2 files changed, 14 insertions(+), 1 deletion(-)

Index: tiff-4.0.3/tools/tiff2pdf.c
===================================================================
--- tiff-4.0.3.orig/tools/tiff2pdf.c
+++ tiff-4.0.3/tools/tiff2pdf.c
@@ -1164,7 +1164,15 @@ void t2p_read_tiff_init(T2P* t2p, TIFF*
 			t2p->tiff_pages[i].page_tilecount;
 		if( (TIFFGetField(input, TIFFTAG_PLANARCONFIG, &xuint16) != 0)
 			&& (xuint16 == PLANARCONFIG_SEPARATE ) ){
-				TIFFGetField(input, TIFFTAG_SAMPLESPERPIXEL, &xuint16);
+				if( !TIFFGetField(input, TIFFTAG_SAMPLESPERPIXEL, &xuint16) )
+				{
+					TIFFError(
+                        TIFF2PDF_MODULE, 
+                        "Missing SamplesPerPixel, %s", 
+                        TIFFFileName(input));
+                    t2p->t2p_error = T2P_ERR_ERROR;
+                    return;
+				}
                 if( (t2p->tiff_tiles[i].tiles_tilecount % xuint16) != 0 )
                 {
                     TIFFError(