diff --git a/backport-add-NULL-pointer-check-when-ntpd-deletes-the-last-interface.patch b/backport-add-NULL-pointer-check-when-ntpd-deletes-the-last-interface.patch
new file mode 100644
index 0000000000000000000000000000000000000000..9ec1ebf8339fec41a1c0da9c4a9b32adc7955cba
--- /dev/null
+++ b/backport-add-NULL-pointer-check-when-ntpd-deletes-the-last-interface.patch
@@ -0,0 +1,37 @@
+From 6f92672308e9ff2ff72f1d929b6887ab24787e42 Mon Sep 17 00:00:00 2001
+From: Harlen Stenn <stenn@ntp.org>
+Date: Tue, 20 Jun 2023 18:41:55 +0000
+Subject: [PATCH] add NULL pointer check when ntpd deletes the last interface
+
+Conflict:NA
+Reference:https://bugs.ntp.org/attachment.cgi?id=1854&action=diff
+
+---
+ include/ntp_lists.h | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+diff --git a/include/ntp_lists.h b/include/ntp_lists.h
+index d741974..37befc0 100644
+--- a/include/ntp_lists.h
++++ b/include/ntp_lists.h
+@@ -181,7 +181,7 @@ do {								\
+ 
+ #define UNLINK_EXPR_SLIST(punlinked, listhead, expr, nextlink,	\
+ 			  entrytype)				\
+-do {								\
++if (NULL != (listhead)) {						\
+ 	entrytype **ppentry;					\
+ 								\
+ 	ppentry = &(listhead);					\
+@@ -202,6 +202,8 @@ do {								\
+ 	} else {						\
+ 		(punlinked) = NULL;				\
+ 	}							\
++} else do {                     \
++    (punlinked) = NULL;                 \
+ } while (FALSE)
+ 
+ #define UNLINK_SLIST(punlinked, listhead, ptounlink, nextlink,	\
+-- 
+2.27.0
+
diff --git a/ntp.spec b/ntp.spec
index d2cac5ecda15bd91592e71151f945dad1e919e40..f199bc47743041cccb1689f105fd2de2e7cb022f 100644
--- a/ntp.spec
+++ b/ntp.spec
@@ -2,7 +2,7 @@
 
 Name:                  ntp
 Version:               4.2.8p14
-Release:               8
+Release:               9
 Summary:               A protocol designed to synchronize the clocks of computers over a network
 License:               MIT and BSD and BSD with advertising
 URL:                   https://www.ntp.org/
@@ -27,7 +27,7 @@ Patch4:                bugfix-fix-ifindex-length.patch
 Patch5:                backport-CVE-2020-15025.patch
 Patch6:                backport-CVE-2023-26551-CVE-2023-26552-CVE-2023-26553-CVE-2023-26554.patch
 Patch7:                backport-CVE-2023-26555-fix-out-write-bounds-in-praecis_parse.patch
-
+Patch8:                backport-add-NULL-pointer-check-when-ntpd-deletes-the-last-interface.patch
 BuildRequires:	       libcap-devel openssl-devel libedit-devel libevent-devel pps-tools-devel
 BuildRequires:         autogen autogen-libopts-devel systemd gcc perl-generators perl-HTML-Parser
 Requires(pre):         shadow-utils autogen >= 5.18.16
@@ -210,6 +210,12 @@ make check
 %{_mandir}/man8/*.8*
 
 %changelog
+* Wed Jun 21 2023 liubo <liubo335@huawei.com> - 4.2.8p14-9
+- Type:bugfix
+- ID:
+- SUG:NA
+- DESC:add NULL pointer check when ntpd deletes the last interface
+
 * Wed May 24 2023 chengyechun <chengyechun1@huawei.com> - 4.2.8p14-8
 - Type:CVE
 - ID:CVE-2023-26551,CVE-2023-26552,CVE-2023-26553,CVE-2023-26554,CVE-2023-26555