diff --git a/backport-CVE-2022-34526.patch b/backport-CVE-2022-34526.patch
new file mode 100644
index 0000000..56ad2bf
--- /dev/null
+++ b/backport-CVE-2022-34526.patch
@@ -0,0 +1,31 @@
+From 275735d0354e39c0ac1dc3c0db2120d6f31d1990 Mon Sep 17 00:00:00 2001
+From: Even Rouault <even.rouault@spatialys.com>
+Date: Mon, 27 Jun 2022 16:09:43 +0200
+Subject: [PATCH] _TIFFCheckFieldIsValidForCodec(): return FALSE when passed a
+ codec-specific tag and the codec is not configured (fixes #433)
+ 
+This avoids crashes when querying such tags
+ 
+Reference:https://gitlab.com/libtiff/libtiff/-/commit/275735d0354e39c0ac1dc3c0db2120d6f31d1990
+Conflict:NA
+---
+ libtiff/tif_dirinfo.c | 3 +++
+ 1 file changed, 3 insertions(+)
+ 
+diff --git a/libtiff/tif_dirinfo.c b/libtiff/tif_dirinfo.c
+index c30f569b..3371cb5c 100644
+--- a/libtiff/tif_dirinfo.c
++++ b/libtiff/tif_dirinfo.c
+@@ -1191,6 +1191,9 @@ _TIFFCheckFieldIsValidForCodec(TIFF *tif, ttag_t tag)
+ 	    default:
+ 		return 1;
+ 	}
++	if( !TIFFIsCODECConfigured(tif->tif_dir.td_compression) ) {
++		return 0;
++	}
+ 	/* Check if codec specific tags are allowed for the current
+ 	 * compression scheme (codec) */
+ 	switch (tif->tif_dir.td_compression) {
+-- 
+GitLab
+
diff --git a/libtiff.spec b/libtiff.spec
index 7fca357..f574817 100644
--- a/libtiff.spec
+++ b/libtiff.spec
@@ -1,6 +1,6 @@
 Name:           libtiff
 Version:        4.3.0
-Release:        32
+Release:        33
 Summary:        TIFF Library and Utilities
 License:        libtiff
 URL:            https://www.simplesystems.org/libtiff/
@@ -46,6 +46,7 @@ Patch6036:      backport-CVE-2023-38288.patch
 Patch6037:      backport-CVE-2023-38289.patch
 Patch6038:      backport-CVE-2023-3618.patch
 Patch6039:      backport-CVE-2022-40090.patch
+Patch6040:      backport-CVE-2022-34526.patch
 
 Patch9000:	fix-raw2tiff-floating-point-exception.patch
 
@@ -169,6 +170,9 @@ find html -name 'Makefile*' | xargs rm
 %exclude %{_datadir}/html/man/tiffgt.1.html
 
 %changelog
+* Thu Sep 07 2023 zhangpan <zhangpan103@h-partners.com> - 4.3.0-33
+- fix CVE-2022-34526
+
 * Fri Sep 01 2023 zhangpan <zhangpan103@h-partners.com> - 4.3.0-32
 - fix CVE-2022-40090