From 4975cace9bf96bfde174f8bb5cc4068d2ea294d4 Mon Sep 17 00:00:00 2001
From: Denys Vlasenko <vda.linux@googlemail.com>
Date: Tue, 15 Jun 2021 14:47:46 +0200
Subject: [PATCH] man: fix segfault in "man 1"

function                                             old     new   delta
man_main                                             942     954     +12

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

Upstream-Status: Backport [4d4fc5ca5ee4f]
CVE: CVE-2021-42373
Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
---
 miscutils/man.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/miscutils/man.c b/miscutils/man.c
index 722f6641e..d319e8bba 100644
--- a/miscutils/man.c
+++ b/miscutils/man.c
@@ -324,7 +324,7 @@ int man_main(int argc UNUSED_PARAM, char **argv)
 
 	/* is 1st ARG a SECTION? */
 	sec_list = conf_sec_list;
-	if (is_section_name(conf_sec_list, *argv)) {
+	if (is_section_name(conf_sec_list, *argv) && argv[1]) {
 		/* yes */
 		sec_list = *argv++;
 	}