From b83e58a55ce4ac0f2e9b613f53eccde4bce09ff7 Mon Sep 17 00:00:00 2001
From: Tobias Stoeckmann <tobias@stoeckmann.org>
Date: Thu, 18 May 2023 17:48:46 +0200
Subject: [PATCH] lib/shells: Plug econf memory leak

You can see the memory leak with address sanitizer if util-linux is
compiled with `--with-vendordir=/usr/etc`.

How to reproduce:

1. Prepare a custom shell file as root
```
mkdir -p /etc/shells.d
echo /bin/myshell > /etc/shells.d/custom
```

2. Run chsh as regular user
```
chsh
```

Signed-off-by: Tobias Stoeckmann <tobias@stoeckmann.org>
---
 lib/shells.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/shells.c b/lib/shells.c
index 6693ab0054..e0d065ee25 100644
--- a/lib/shells.c
+++ b/lib/shells.c
@@ -53,6 +53,7 @@ extern int is_known_shell(const char *shell_name)
 			break;
 		}
 	}
+	econf_free (keys);
 	econf_free (key_file);	
 #else
 	char *s;
-- 
2.47.3