From: gaurav <gaurav@kargo.com>
Date: Thu, 7 May 2020 07:55:31 +0000 (-0400)
Subject: netlink socket correct check (#15720)
X-Git-Tag: v246-rc1~422
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=48a3b5c6db8fbf17bfe59298ba7e14829b14bd27;p=thirdparty%2Fsystemd.git

netlink socket correct check (#15720)
---

diff --git a/src/libsystemd/sd-netlink/netlink-socket.c b/src/libsystemd/sd-netlink/netlink-socket.c
index aa3c6074cb5..8eff8d99244 100644
--- a/src/libsystemd/sd-netlink/netlink-socket.c
+++ b/src/libsystemd/sd-netlink/netlink-socket.c
@@ -283,7 +283,7 @@ static int socket_recv_message(int fd, struct iovec *iov, uint32_t *ret_mcast_gr
                 struct cmsghdr *cmsg;
 
                 cmsg = cmsg_find(&msg, SOL_NETLINK, NETLINK_PKTINFO, CMSG_LEN(sizeof(struct nl_pktinfo)));
-                if (ret_mcast_group)
+                if (cmsg)
                         *ret_mcast_group = ((struct nl_pktinfo*) CMSG_DATA(cmsg))->group;
                 else
                         *ret_mcast_group = 0;