diff --git a/sys/netinet/sctp_usrreq.c b/sys/netinet/sctp_usrreq.c
index 7fb7ab3418c..94d57225c20 100644
--- a/sys/netinet/sctp_usrreq.c
+++ b/sys/netinet/sctp_usrreq.c
@@ -361,8 +361,9 @@ sctp_getcred(SYSCTL_HANDLER_ARGS)
 	/* FIX, for non-bsd is this right? */
 	vrf_id = SCTP_DEFAULT_VRFID;
 
+	if (req->newptr == NULL)
+		return (EINVAL);
 	error = priv_check(req->td, PRIV_NETINET_GETCRED);
-
 	if (error)
 		return (error);
 
diff --git a/sys/netinet/tcp_subr.c b/sys/netinet/tcp_subr.c
index 03efc759092..f6317815521 100644
--- a/sys/netinet/tcp_subr.c
+++ b/sys/netinet/tcp_subr.c
@@ -2698,6 +2698,8 @@ tcp_getcred(SYSCTL_HANDLER_ARGS)
 	struct inpcb *inp;
 	int error;
 
+	if (req->newptr == NULL)
+		return (EINVAL);
 	error = priv_check(req->td, PRIV_NETINET_GETCRED);
 	if (error)
 		return (error);
@@ -2740,6 +2742,8 @@ tcp6_getcred(SYSCTL_HANDLER_ARGS)
 	int mapped = 0;
 #endif
 
+	if (req->newptr == NULL)
+		return (EINVAL);
 	error = priv_check(req->td, PRIV_NETINET_GETCRED);
 	if (error)
 		return (error);
diff --git a/sys/netinet/udp_usrreq.c b/sys/netinet/udp_usrreq.c
index b3d980956b6..dafbaf6dc67 100644
--- a/sys/netinet/udp_usrreq.c
+++ b/sys/netinet/udp_usrreq.c
@@ -844,6 +844,8 @@ udp_getcred(SYSCTL_HANDLER_ARGS)
 	struct inpcb *inp;
 	int error;
 
+	if (req->newptr == NULL)
+		return (EINVAL);
 	error = priv_check(req->td, PRIV_NETINET_GETCRED);
 	if (error)
 		return (error);
diff --git a/sys/netinet6/sctp6_usrreq.c b/sys/netinet6/sctp6_usrreq.c
index c0e758e9e12..8964ccf54c5 100644
--- a/sys/netinet6/sctp6_usrreq.c
+++ b/sys/netinet6/sctp6_usrreq.c
@@ -375,6 +375,8 @@ sctp6_getcred(SYSCTL_HANDLER_ARGS)
 
 	vrf_id = SCTP_DEFAULT_VRFID;
 
+	if (req->newptr == NULL)
+		return (EINVAL);
 	error = priv_check(req->td, PRIV_NETINET_GETCRED);
 	if (error)
 		return (error);
diff --git a/sys/netinet6/udp6_usrreq.c b/sys/netinet6/udp6_usrreq.c
index 40216ad4c42..c44510e3b65 100644
--- a/sys/netinet6/udp6_usrreq.c
+++ b/sys/netinet6/udp6_usrreq.c
@@ -617,6 +617,8 @@ udp6_getcred(SYSCTL_HANDLER_ARGS)
 	struct inpcb *inp;
 	int error;
 
+	if (req->newptr == NULL)
+		return (EINVAL);
 	error = priv_check(req->td, PRIV_NETINET_GETCRED);
 	if (error)
 		return (error);