diff --git a/fix-epoll-event-size-to-scope-with-extra-event-on-send-to-link.patch b/fix-epoll-event-size-to-scope-with-extra-event-on-send-to-link.patch
new file mode 100644
index 0000000..5966961
--- /dev/null
+++ b/fix-epoll-event-size-to-scope-with-extra-event-on-send-to-link.patch
@@ -0,0 +1,26 @@
+From 26734825de99f514827ee863592cf04fe2fc9231 Mon Sep 17 00:00:00 2001
+From: Fabio M.Di Nitto <fdinitto@redhat.com>
+Date: Tue, 22 Mar 2022 15:40:42 +0100
+Subject: [PATCH] [tx] fix epoll event size to scope with extra event on send to link
+Reference: https://github.com/kronosnet/kronosnet/pull/377/commits
+
+---
+ libknet/threads_tx.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/libknet/threads_tx.c b/libknet/threads_tx.c
+index 1d954d6..3f43037 100644
+--- a/libknet/threads_tx.c
++++ b/libknet/threads_tx.c
+@@ -676,7 +676,7 @@ static void _handle_send_to_links(knet_handle_t knet_h, struct msghdr *msg, int
+ void *_handle_send_to_links_thread(void *data)
+ {
+ 	knet_handle_t knet_h = (knet_handle_t) data;
+-	struct epoll_event events[KNET_EPOLL_MAX_EVENTS];
++	struct epoll_event events[KNET_EPOLL_MAX_EVENTS + 1];
+ 	int i, nev, type;
+ 	int flush, flush_queue_limit;
+ 	int8_t channel;
+-- 
+2.27.0
+
diff --git a/kronosnet.spec b/kronosnet.spec
index 5ca5763..dcccc62 100644
--- a/kronosnet.spec
+++ b/kronosnet.spec
@@ -20,7 +20,7 @@
 Name:                kronosnet
 Summary:             Multipoint-to-Multipoint VPN daemon
 Version:             1.13
-Release:             3
+Release:             4
 License:             GPLv2+ and LGPLv2+
 URL:                 https://kronosnet.org
 Source0:             https://kronosnet.org/releases/%{name}-%{version}.tar.xz
@@ -66,6 +66,7 @@ BuildRequires:       autoconf automake libtool
 %endif
 
 Patch0001:	backport-kronosnet-fix-format-truncation.patch
+Patch0002:      fix-epoll-event-size-to-scope-with-extra-event-on-send-to-link.patch
 
 %prep
 %autosetup -n kronosnet-%{version} -p1
@@ -436,6 +437,9 @@ Requires:            libknet1%{_isa} = %{version}-%{release}
 %endif
 
 %changelog
+* Tue Nov 15 2022 Ge Wang <wangge20@h-partners.com> - 1.13-4
+- fix epoll event size to scope with extra event on send to link
+
 * Wed Aug 04 2021 Liu Yinsi <liuyinsi@163.com> - 1.13-3
 - fix format-truncation to support gcc 10