diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 2a9a1971b6b3..a1e80cd90f5d 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -5078,59 +5078,39 @@ static int selinux_tun_dev_open(void *security)
 
 static int selinux_nlmsg_perm(struct sock *sk, struct sk_buff *skb)
 {
-	int rc = 0;
-	unsigned int msg_len;
-	unsigned int data_len = skb->len;
-	unsigned char *data = skb->data;
+	int err = 0;
+	u32 perm;
 	struct nlmsghdr *nlh;
 	struct sk_security_struct *sksec = sk->sk_security;
-	u16 sclass = sksec->sclass;
-	u32 perm;
 
-	while (data_len >= nlmsg_total_size(0)) {
-		nlh = (struct nlmsghdr *)data;
+	if (skb->len < NLMSG_HDRLEN) {
+		err = -EINVAL;
+		goto out;
+	}
+	nlh = nlmsg_hdr(skb);
 
-		/* NOTE: the nlmsg_len field isn't reliably set by some netlink
-		 *       users which means we can't reject skb's with bogus
-		 *       length fields; our solution is to follow what
-		 *       netlink_rcv_skb() does and simply skip processing at
-		 *       messages with length fields that are clearly junk
-		 */
-		if (nlh->nlmsg_len < NLMSG_HDRLEN || nlh->nlmsg_len > data_len)
-			return 0;
-
-		rc = selinux_nlmsg_lookup(sclass, nlh->nlmsg_type, &perm);
-		if (rc == 0) {
-			rc = sock_has_perm(current, sk, perm);
-			if (rc)
-				return rc;
-		} else if (rc == -EINVAL) {
-			/* -EINVAL is a missing msg/perm mapping */
+	err = selinux_nlmsg_lookup(sksec->sclass, nlh->nlmsg_type, &perm);
+	if (err) {
+		if (err == -EINVAL) {
 			pr_warn_ratelimited("SELinux: unrecognized netlink"
-				" message: protocol=%hu nlmsg_type=%hu sclass=%s"
-				" pid=%d comm=%s\n",
-				sk->sk_protocol, nlh->nlmsg_type,
-				secclass_map[sclass - 1].name,
-				task_pid_nr(current), current->comm);
-			if (selinux_enforcing && !security_get_allow_unknown())
-				return rc;
-			rc = 0;
-		} else if (rc == -ENOENT) {
-			/* -ENOENT is a missing socket/class mapping, ignore */
-			rc = 0;
-		} else {
-			return rc;
+			       " message: protocol=%hu nlmsg_type=%hu sclass=%s"
+			       " pig=%d comm=%s\n",
+			       sk->sk_protocol, nlh->nlmsg_type,
+			       secclass_map[sksec->sclass - 1].name,
+			       task_pid_nr(current), current->comm);
+			if (!selinux_enforcing || security_get_allow_unknown())
+				err = 0;
 		}
 
-		/* move to the next message after applying netlink padding */
-		msg_len = NLMSG_ALIGN(nlh->nlmsg_len);
-		if (msg_len >= data_len)
-			return 0;
-		data_len -= msg_len;
-		data += msg_len;
+		/* Ignore */
+		if (err == -ENOENT)
+			err = 0;
+		goto out;
 	}
 
-	return rc;
+	err = sock_has_perm(current, sk, perm);
+out:
+	return err;
 }
 
 #ifdef CONFIG_NETFILTER