From: Christian Brauner <christian.brauner@ubuntu.com>
Date: Thu, 9 Feb 2017 10:36:47 +0000 (+0100)
Subject: pam_cgfs: make sure that **p is not NULL
X-Git-Tag: lxcfs-3.0.0.beta1~20^2~1
X-Git-Url: https://git.proxmox.com/?p=mirror_lxcfs.git;a=commitdiff_plain;h=bfd723ffbc08901e57f5d7798e70e9356089c8f2

pam_cgfs: make sure that **p is not NULL

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
---

diff --git a/pam/pam_cgfs.c b/pam/pam_cgfs.c
index a22d2f8..fd47d70 100644
--- a/pam/pam_cgfs.c
+++ b/pam/pam_cgfs.c
@@ -1649,6 +1649,9 @@ static char *string_join(const char *sep, const char **parts, bool use_as_prefix
 	size_t sep_len = strlen(sep);
 	size_t result_len = use_as_prefix * sep_len;
 
+	if (!parts)
+		return NULL;
+
 	/* calculate new string length */
 	for (p = (char **)parts; *p; p++)
 		result_len += (p > (char **)parts) * sep_len + strlen(*p);