diff --git a/0040-enhance-pointer-safe.patch b/0040-enhance-pointer-safe.patch
new file mode 100644
index 0000000000000000000000000000000000000000..4580c43885428110d7d4f21ea9cd831c269a3af0
--- /dev/null
+++ b/0040-enhance-pointer-safe.patch
@@ -0,0 +1,33 @@
+From 9cf127b4297b8d0e4f3fd34c264d7b1648bad77f Mon Sep 17 00:00:00 2001
+From: Zdenek Kabelac <zkabelac@redhat.com>
+Date: Fri, 3 May 2024 12:38:39 +0200
+Subject: [PATCH] const: suffixes
+
+---
+ tools/lvmcmdline.c | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/tools/lvmcmdline.c b/tools/lvmcmdline.c
+index 66b269538..38e3ce190 100644
+--- a/tools/lvmcmdline.c
++++ b/tools/lvmcmdline.c
+@@ -566,7 +566,7 @@ static int _size_arg(struct cmd_context *cmd __attribute__((unused)),
+ {
+ 	char *ptr;
+ 	int i;
+-	static const char *suffixes = "kmgtpebs";
++	static const char _suffixes[] = "kmgtpebs";
+ 	char *val;
+ 	double v;
+ 	uint64_t v_tmp, adjustment;
+@@ -626,8 +626,8 @@ static int _size_arg(struct cmd_context *cmd __attribute__((unused)),
+ 			return 0;
+ 		}
+ 	} else if (*ptr) {
+-		for (i = strlen(suffixes) - 1; i >= 0; i--)
+-			if (suffixes[i] == tolower((int) *ptr))
++		for (i = sizeof(_suffixes) - 1; i >= 0; --i)
++			if (_suffixes[i] == tolower((int) *ptr))
+ 				break;
+ 
+ 		if (i < 0) {
diff --git a/lvm2.spec b/lvm2.spec
index 2aa1314b400d866f0771b8dbb204ac4674d88f78..bf7c4afe0dfbba5d8acc3fc70b709459f6afb758 100644
--- a/lvm2.spec
+++ b/lvm2.spec
@@ -43,7 +43,7 @@
 
 Name:      lvm2
 Version:   2.03.14
-Release:   21
+Release:   22
 Epoch:     8
 Summary:   Tools for logical volume management
 License:   GPLv2+ and LGPLv2.1 and BSD
@@ -88,6 +88,7 @@ Patch36:   0036-config-check-for-0-from-read.patch
 Patch37:   0037-fix-pv_major-and-pv_minor-report-field-type.patch
 Patch38:   0038-fix-buffer-size-usage.patch
 Patch39:   0039-add-internal-error-for-missing-vg.patch
+Patch40:   0040-enhance-pointer-safe.patch
 
 BuildRequires: gcc
 BuildRequires: gcc-c++
@@ -514,6 +515,9 @@ fi
 
 
 %changelog
+* Thu Nov 13 2025 weishuaihao <weishuaihao@kylinos.cn> - 8:2.03.14-22 
+- enhance pointer safe
+
 * Tue Nov 11 2025 weishuaihao <weishuaihao@kylinos.cn> - 8:2.03.14-21 
 - Add internal error for missing vg