diff --git a/net/dccp/proto.c b/net/dccp/proto.c
index b03ecf6b2bb0..f79bcef5088f 100644
--- a/net/dccp/proto.c
+++ b/net/dccp/proto.c
@@ -473,14 +473,9 @@ static int dccp_setsockopt_ccid(struct sock *sk, int type,
 	if (optlen < 1 || optlen > DCCP_FEAT_MAX_SP_VALS)
 		return -EINVAL;
 
-	val = kmalloc(optlen, GFP_KERNEL);
-	if (val == NULL)
-		return -ENOMEM;
-
-	if (copy_from_user(val, optval, optlen)) {
-		kfree(val);
-		return -EFAULT;
-	}
+	val = memdup_user(optval, optlen);
+	if (IS_ERR(val))
+		return PTR_ERR(val);
 
 	lock_sock(sk);
 	if (type == DCCP_SOCKOPT_TX_CCID || type == DCCP_SOCKOPT_CCID)