diff --git a/0004-logging-fix-segfault-on-an-underflow-with-an-input-s.patch b/0004-logging-fix-segfault-on-an-underflow-with-an-input-s.patch
new file mode 100644
index 0000000000000000000000000000000000000000..0b0a6d867868d005d98b9b5c28e4c2b9cc5be72c
--- /dev/null
+++ b/0004-logging-fix-segfault-on-an-underflow-with-an-input-s.patch
@@ -0,0 +1,48 @@
+From 9cd8358cda919ae684d544ae05d80edcd597379c Mon Sep 17 00:00:00 2001
+From: Chris Leech <cleech@redhat.com>
+Date: Mon, 25 Mar 2024 12:27:08 -0700
+Subject: [PATCH] logging: fix segfault on an underflow with an input string of
+ all newlines
+
+sanitize_format would segfault if the input string to a logging macro
+was all newline characters, these minor changes to tracking length while
+removing trailing newlines should resolve that.
+
+Signed-off-by: Chris Leech <cleech@redhat.com>
+
+Conflict: NA
+Reference: https://github.com/open-iscsi/open-isns/commit/9cd8358cda919ae684d544ae05d80edcd597379c
+---
+ logging.c | 14 +++++++++-----
+ 1 file changed, 9 insertions(+), 5 deletions(-)
+
+diff --git a/logging.c b/logging.c
+index 25390bc..889750d 100644
+--- a/logging.c
++++ b/logging.c
+@@ -46,13 +46,17 @@ sanitize_format(const char *fmt)
+ 		return fmt;
+ 
+ 	strcpy(__fmt, fmt);
+-	while (len-- && __fmt[len] == '\n')
+-		__fmt[len] = '\0';
+-
+-	while (len) {
++	while (len > 0) {
++		len = len - 1;
++		if (__fmt[len] == '\n')
++			__fmt[len] = '\0';
++		else
++			break;
++	}
++	while (len > 0) {
++		len = len - 1;
+ 		if (__fmt[len] == '\n')
+ 			__fmt[len] = ' ';
+-		--len;
+ 	}
+ 
+ 	return __fmt;
+-- 
+2.33.0
+
diff --git a/open-isns.spec b/open-isns.spec
index 64a3a681a9f2b5cc48ff44d5be482423b0f5acbf..c55cb69f068454412df1c0e0bc8928e2baf1f55f 100644
--- a/open-isns.spec
+++ b/open-isns.spec
@@ -1,6 +1,6 @@
 Name:           open-isns
 Version:        0.101
-Release:        4
+Release:        5
 Summary:        The iSNS server and client programs
 License:        LGPLv2+
 URL:            https://www.github.com/open-iscsi/open-isns
@@ -9,6 +9,7 @@ Source0:        https://www.github.com/open-iscsi/open-isns/archive/v%{version}.
 Patch0001: 0001-Do-not-install-isnsd.socket-in-isnsd.service.patch
 Patch0002: 0002-isnsadm-Fix-unparse-command-line-options-V-and-r.patch
 Patch0003: 0003-isnsd-socket-Make-sure-to-create-IPv6-socket-default.patch
+Patch0004: 0004-logging-fix-segfault-on-an-underflow-with-an-input-s.patch
 
 BuildRequires:  gcc systemd automake autoconf make
 BuildRequires:  openssl-devel systemd-devel
@@ -96,6 +97,9 @@ install -p -m 644 isnsd.service %{buildroot}%{_unitdir}/isnsd.service
 %{_mandir}/man8/*
 
 %changelog
+* Fri May 9 2025 lvyy <lyunmail@163.com> - 0.101-5
+- logging: fix segfault on an underflow with an input string of all newlines
+
 * Wed Jul 31 2024 JiangJianJun <jiangjianjun3@huawei.com> - 0.101-4
 - DESC: fix spec format