diff --git a/fix-raw2tiff-floating-point-exception.patch b/fix-raw2tiff-floating-point-exception.patch
new file mode 100644
index 0000000..ca217c8
--- /dev/null
+++ b/fix-raw2tiff-floating-point-exception.patch
@@ -0,0 +1,34 @@
+From 42f499986d3c8a1dce55db7d97d501f8e9dfc8f6 Mon Sep 17 00:00:00 2001
+From: t.feng <fengtao40@huawei.com>
+Date: Mon, 13 Dec 2021 21:03:13 +0800
+Subject: [PATCH] fix raw2tiff floating point exception
+
+if we input illegal nbands, like:
+raw2tiff -b :2 test.raw test.tif
+we got:
+Floating point exception (core dumped)
+so, check nbands before guessSize
+
+---
+ tools/raw2tiff.c | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+diff --git a/tools/raw2tiff.c b/tools/raw2tiff.c
+index dfee715..3a6f00e 100644
+--- a/tools/raw2tiff.c
++++ b/tools/raw2tiff.c
+@@ -209,6 +209,11 @@ main(int argc, char* argv[])
+ 		return (EXIT_FAILURE);
+ 	}
+ 
++	if (nbands == 0) {
++		fprintf(stderr, "The number of bands is illegal.\n");
++		return (-1);
++	}
++
+ 	if (guessSize(fd, dtype, hdr_size, nbands, swab, &width, &length) < 0)
+ 		return EXIT_FAILURE;
+ 
+-- 
+2.27.0
+
diff --git a/libtiff.spec b/libtiff.spec
index 68c8ea9..8e3ae84 100644
--- a/libtiff.spec
+++ b/libtiff.spec
@@ -1,11 +1,13 @@
 Name:           libtiff
 Version:        4.3.0
-Release:        3
+Release:        4
 Summary:        TIFF Library and Utilities
 License:        libtiff
 URL:            https://www.simplesystems.org/libtiff/
 Source0:        https://download.osgeo.org/libtiff/tiff-%{version}.tar.gz
 
+Patch9000:	fix-raw2tiff-floating-point-exception.patch
+
 BuildRequires:  gcc gcc-c++ zlib-devel libjpeg-devel jbigkit-devel
 BuildRequires:  libtool automake autoconf pkgconfig 
 
@@ -112,6 +114,9 @@ find html -name 'Makefile*' | xargs rm
 %exclude %{_datadir}/html/man/tiffgt.1.html
 
 %changelog
+* Wed Dec 15 2021 liuyumeng <liuyumeng5@huawei.com> - 4.3.0-4
+- fix raw2tiff floating point exception
+
 * Mon Dec 13 2021 liuyumeng <liuyumeng5@huawei.com> - 4.3.0-3
 - fix incorrect writing when unpacking in spec