From: Tobias Brunner <tobias@strongswan.org>
Date: Tue, 17 Nov 2020 16:55:24 +0000 (+0100)
Subject: kernel-netlink: Make sure we successfully opened a Netlink socket
X-Git-Tag: 5.9.2dr1~18
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9248f636b0201bef4d4a817f59b97e68e9be031e;p=thirdparty%2Fstrongswan.git

kernel-netlink: Make sure we successfully opened a Netlink socket

This is in addition to the fix in the destructor in 991e9e5dc9.
---

diff --git a/src/libcharon/plugins/kernel_netlink/kernel_netlink_net.c b/src/libcharon/plugins/kernel_netlink/kernel_netlink_net.c
index 3412877ad9..3e6e64cfd8 100644
--- a/src/libcharon/plugins/kernel_netlink/kernel_netlink_net.c
+++ b/src/libcharon/plugins/kernel_netlink/kernel_netlink_net.c
@@ -3159,6 +3159,12 @@ kernel_netlink_net_t *kernel_netlink_net_create()
 
 	check_kernel_features(this);
 
+	if (!this->socket)
+	{
+		destroy(this);
+		return NULL;
+	}
+
 	if (streq(lib->ns, "starter"))
 	{	/* starter has no threads, so we do not register for kernel events */
 		register_for_events = FALSE;