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-rw-r--r--net/netlink/af_netlink.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index fa556fdef57d..55342c4d5cec 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -1844,6 +1844,8 @@ static int netlink_sendmsg(struct socket *sock, struct msghdr *msg, size_t len)
if (msg->msg_namelen) {
err = -EINVAL;
+ if (msg->msg_namelen < sizeof(struct sockaddr_nl))
+ goto out;
if (addr->nl_family != AF_NETLINK)
goto out;
dst_portid = addr->nl_pid;