From 32ea0722ee68f503b7a3f9b2d557acb293fc8cde Mon Sep 17 00:00:00 2001
From: 4ugustus <wangdw.augustus@qq.com>
Date: Tue, 8 Mar 2022 16:22:04 +0000
Subject: [PATCH] fix the FPE in tiffcrop (#393)

CVE: CVE-2022-0909
Upstream-Status: Backport [https://sources.debian.org/src/tiff/4.1.0+git191117-2%7Edeb10u4/debian/patches/CVE-2022-0909.patch/]
Signed-off-by: Ranjitsinh Rathod <ranjitsinh.rathod@kpit.com>
Comment: No change in any hunk

---
 libtiff/tif_dir.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libtiff/tif_dir.c b/libtiff/tif_dir.c
index 57055ca9..59b346ca 100644
--- a/libtiff/tif_dir.c
+++ b/libtiff/tif_dir.c
@@ -334,13 +334,13 @@ _TIFFVSetField(TIFF* tif, uint32_t tag, va_list ap)
 		break;
 	case TIFFTAG_XRESOLUTION:
         dblval = va_arg(ap, double);
-        if( dblval < 0 )
+        if( dblval != dblval || dblval < 0 )
             goto badvaluedouble;
 		td->td_xresolution = _TIFFClampDoubleToFloat( dblval );
 		break;
 	case TIFFTAG_YRESOLUTION:
         dblval = va_arg(ap, double);
-        if( dblval < 0 )
+        if( dblval != dblval || dblval < 0 )
             goto badvaluedouble;
 		td->td_yresolution = _TIFFClampDoubleToFloat( dblval );
 		break;
-- 
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