diff --git a/fix-potential-use-after-free-bugs-in-libxalarm.patch b/fix-potential-use-after-free-bugs-in-libxalarm.patch
new file mode 100644
index 0000000000000000000000000000000000000000..d78317e597f704511744fafe98b757d0d826c9e5
--- /dev/null
+++ b/fix-potential-use-after-free-bugs-in-libxalarm.patch
@@ -0,0 +1,24 @@
+From 37c606446a45fedd08ff3782e0185552f8f34dec Mon Sep 17 00:00:00 2001
+From: shixuantong <shixuantong1@huawei.com>
+Date: Tue, 9 Dec 2025 11:15:22 +0800
+Subject: [PATCH] fix potential use-after-free bugs in libxalarm
+
+---
+ src/libs/libxalarm/register_xalarm.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/src/libs/libxalarm/register_xalarm.c b/src/libs/libxalarm/register_xalarm.c
+index 13584cb..0309ae6 100644
+--- a/src/libs/libxalarm/register_xalarm.c
++++ b/src/libs/libxalarm/register_xalarm.c
+@@ -676,6 +676,7 @@ int xalarm_register_event(struct alarm_register **register_info, struct alarm_su
+     (*register_info)->register_fd = create_unix_socket(PATH_REG_ALARM);
+     if ((*register_info)->register_fd == -1) {
+         free(*register_info);
++        *register_info = NULL;
+         return -ENOTCONN;
+     }
+ 
+-- 
+2.27.0
+
diff --git a/sysSentry.spec b/sysSentry.spec
index 89ff88d28f4daa0dc9b3caf795f233d76d5481c6..b0c71b762378848f3e0da87a3962699db7c9bd7c 100644
--- a/sysSentry.spec
+++ b/sysSentry.spec
@@ -4,7 +4,7 @@
 Summary: System Inspection Framework
 Name: sysSentry
 Version: 1.0.3
-Release: 19
+Release: 20
 License: Mulan PSL v2
 Group: System Environment/Daemons
 Source0: https://gitee.com/openeuler/sysSentry/releases/download/v%{version}/%{name}-%{version}.tar.gz
@@ -38,6 +38,7 @@ Patch26:   Fix-Security-Scan-Warning.patch
 Patch27:   Fix-two-code-review-comments.patch
 Patch28:   Add-MulanV2-License-statement.patch
 Patch29:   slow-io-plugin-upgrade.patch
+Patch30:   fix-potential-use-after-free-bugs-in-libxalarm.patch
 
 BuildRequires: cmake gcc-c++
 BuildRequires: python3 python3-setuptools
@@ -290,6 +291,12 @@ rm -rf /var/run/sysSentry | :
 %attr(0600,root,root) %config(noreplace) %{_sysconfdir}/sysSentry/tasks/soc_ring_sentry.mod
 
 %changelog
+* Tue Dec 9 2025 shixuantong <shixuantong1@h-partners.com> - 1.0.3-20
+- Type:bugfix
+- CVE:NA
+- SUG:NA
+- DESC:fix potential use-after-free bugs in libxalarm
+
 * Wed Dec 3 2025 shixuantong <shixuantong1@h-partners.com> - 1.0.3-19
 - Type:bugfix
 - CVE:NA