diff --git a/Increase-the-pipe-size-in-the-test-case.patch b/Increase-the-pipe-size-in-the-test-case.patch
new file mode 100644
index 0000000000000000000000000000000000000000..0afd3b3503ec038369607f5bfa0b0e0e1d2df7bf
--- /dev/null
+++ b/Increase-the-pipe-size-in-the-test-case.patch
@@ -0,0 +1,66 @@
+From 27f4c84c63180c44dfbdfd1c5997066b5276534d Mon Sep 17 00:00:00 2001
+From: hongjinghao <hongjinghao@huawei.com>
+Date: Wed, 15 Mar 2023 17:09:17 +0800
+Subject: [PATCH] Increase the pipe size in the test case
+
+---
+ lesstest/pipeline.c | 11 +++++++++--
+ 1 file changed, 9 insertions(+), 2 deletions(-)
+
+diff --git a/lesstest/pipeline.c b/lesstest/pipeline.c
+index 78cc9e7..8d85d23 100644
+--- a/lesstest/pipeline.c
++++ b/lesstest/pipeline.c
+@@ -1,3 +1,4 @@
++#define _GNU_SOURCE
+ #include <stdio.h>
+ #include <unistd.h>
+ #include <stdlib.h>
+@@ -20,7 +21,7 @@ static void dup_std(int fd0, int fd1) {
+ 	if (fd1 >= 0) dup2(fd1, 1);
+ }
+ 
+-static const char* basename(const char* path) {
++static const char* _basename(const char* path) {
+ 	const char* slash = strrchr(path, '/');
+ 	if (slash == NULL) return path;
+ 	return slash+1;
+@@ -98,7 +99,7 @@ LessPipeline* create_less_pipeline(char* const* argv, int argc, char* const* env
+ 	// the named text file to its basename, and run less on the link.
+ 	LessPipeline* pipeline = new_pipeline();
+ 	const char* textfile = argv[argc-1];
+-	const char* textbase = basename(textfile);
++	const char* textbase = _basename(textfile);
+ 	if (textbase != textfile) {
+ 		pipeline->tempfile = textbase;
+ 		if (link(textfile, textbase) < 0) {
+@@ -111,6 +112,8 @@ LessPipeline* create_less_pipeline(char* const* argv, int argc, char* const* env
+ 		destroy_less_pipeline(pipeline);
+ 		return NULL;
+ 	}
++	fcntl(pipeline->screen_in_pipe[0], F_SETPIPE_SZ, 10240);
++	fcntl(pipeline->screen_in_pipe[1], F_SETPIPE_SZ, 10240);
+ 	const char* w = get_envp(envp, "COLUMNS");
+ 	const char* h = get_envp(envp, "LINES");
+ 	if (w != NULL) pipeline->screen_width = atoi(w);
+@@ -121,6 +124,8 @@ LessPipeline* create_less_pipeline(char* const* argv, int argc, char* const* env
+ 			destroy_less_pipeline(pipeline);
+ 			return 0;
+ 		}
++		fcntl(pipeline->less_in_pipe[0], F_SETPIPE_SZ, 10240);
++		fcntl(pipeline->less_in_pipe[1], F_SETPIPE_SZ, 10240);
+ 		if (verbose) fprintf(stderr, "less in pipe %d,%d\n", pipeline->less_in_pipe[RD], pipeline->less_in_pipe[WR]);
+ 		char* less = argv[0];
+ 		if (verbose) fprintf(stderr, "testing %s on %s\n", less, textfile);
+@@ -139,6 +144,8 @@ LessPipeline* create_less_pipeline(char* const* argv, int argc, char* const* env
+ 		destroy_less_pipeline(pipeline);
+ 		return NULL;
+ 	}
++	fcntl(pipeline->screen_out_pipe[0], F_SETPIPE_SZ, 10240);
++	fcntl(pipeline->screen_out_pipe[1], F_SETPIPE_SZ, 10240);
+ 	if (verbose) fprintf(stderr, "screen out pipe %d,%d\n", pipeline->screen_out_pipe[RD], pipeline->screen_out_pipe[WR]);
+ 	pipeline->screen_pid = fork();
+ 	if (!pipeline->screen_pid) // child: lt_screen
+-- 
+2.27.0
+
diff --git a/less.spec b/less.spec
index 3d088ca8ac2cf99e27459e739d2e5f144fa083db..9413f08da76bc2540d05c0b27789d2194f6f1adf 100644
--- a/less.spec
+++ b/less.spec
@@ -1,6 +1,6 @@
 Name:		less
 Version:	608
-Release:        3
+Release:        4
 Summary:	Less is a pager that displays text files.
 License:	GPLv3+ or BSD
 URL:		http://www.greenwoodsoftware.com/less
@@ -52,6 +52,8 @@ Patch6041:      backport-makecheck-0041-lesstest-Add-a-couple-more-lt-files.patc
 Patch6042:      backport-makecheck-0042-Make-make-check-work-regardless-of-directory-where-l.patch
 Patch6043:      backport-End-OSC8-hyperlink-on-invalid-embedded-escape-sequen.patch
 
+Patch9000:	Increase-the-pipe-size-in-the-test-case.patch
+
 BuildRequires:	gcc make ncurses-devel autoconf automake libtool
 
 %description
@@ -92,6 +94,9 @@ make check
 %{_mandir}/man1/*
 
 %changelog
+* Wed Mar 15 2023 hongjinghao <hongjinghao@huawei.com> - 609-4
+- Increase the pipe size in the test case
+
 * Fri Feb 17 2023 hongjinghao <hongjinghao@huawei.com> - 608-3
 - fix CVE-2022-46663