1 files changed, 16 insertions, 1 deletions

diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c
index 177528ed3e1b..385f1757158a 100644
--- a/net/sctp/sm_statefuns.c
+++ b/net/sctp/sm_statefuns.c
@@ -5176,7 +5176,22 @@ static struct sctp_packet *sctp_ootb_pkt_new(const struct sctp_association *asoc
          * association exists, otherwise, use the peer's vtag.
          */
         if (asoc) {
-                vtag = asoc->peer.i.init_tag;
+                /* Special case the INIT-ACK as there is no peer's vtag
+                 * yet.
+                 */
+                switch(chunk->chunk_hdr->type) {
+                case SCTP_CID_INIT_ACK:
+                {
+                        sctp_initack_chunk_t *initack;
+
+                        initack = (sctp_initack_chunk_t *)chunk->chunk_hdr;
+                        vtag = ntohl(initack->init_hdr.init_tag);
+                        break;
+                }
+                default:
+                        vtag = asoc->peer.i.init_tag;
+                        break;
+                }
         } else {
                 /* Special case the INIT and stale COOKIE_ECHO as there is no
                  * vtag yet.