diff --git a/sys/netinet6/udp6_usrreq.c b/sys/netinet6/udp6_usrreq.c
--- a/sys/netinet6/udp6_usrreq.c
+++ b/sys/netinet6/udp6_usrreq.c
@@ -432,7 +432,7 @@
 
 		/* check if we can safely examine src and dst ports */
 		if (m->m_pkthdr.len < off + sizeof(*uhp))
-			return;
+			goto out;
 
 		bzero(&uh, sizeof(uh));
 		m_copydata(m, off, sizeof(*uhp), &uh);