1 files changed, 9 insertions, 4 deletions

diff --git a/net/dccp/output.c b/net/dccp/output.c
index 92f3f6f2ef51..fea30cdc0bee 100644
--- a/net/dccp/output.c
+++ b/net/dccp/output.c
@@ -339,10 +339,12 @@ struct sk_buff *dccp_make_response(struct sock *sk, struct dst_entry *dst,
         DCCP_SKB_CB(skb)->dccpd_type = DCCP_PKT_RESPONSE;
         DCCP_SKB_CB(skb)->dccpd_seq  = dreq->dreq_iss;
 
-        if (dccp_insert_options_rsk(dreq, skb)) {
-                kfree_skb(skb);
-                return NULL;
-        }
+        /* Resolve feature dependencies resulting from choice of CCID */
+        if (dccp_feat_server_ccid_dependencies(dreq))
+                goto response_failed;
+
+        if (dccp_insert_options_rsk(dreq, skb))
+                goto response_failed;
 
         /* Build and checksum header */
         dh = dccp_zeroed_hdr(skb, dccp_header_size);
@@ -363,6 +365,9 @@ struct sk_buff *dccp_make_response(struct sock *sk, struct dst_entry *dst,
         inet_rsk(req)->acked = 1;
         DCCP_INC_STATS(DCCP_MIB_OUTSEGS);
         return skb;
+response_failed:
+        kfree_skb(skb);
+        return NULL;
 }
 
 EXPORT_SYMBOL_GPL(dccp_make_response);