diff options
| -rw-r--r-- | net/sctp/sm_statefuns.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c index f5d131f52a7..8cdba51ec07 100644 --- a/net/sctp/sm_statefuns.c +++ b/net/sctp/sm_statefuns.c @@ -636,8 +636,9 @@ sctp_disposition_t sctp_sf_do_5_1D_ce(const struct sctp_endpoint *ep, */ chunk->subh.cookie_hdr = (struct sctp_signed_cookie *)chunk->skb->data; - skb_pull(chunk->skb, - ntohs(chunk->chunk_hdr->length) - sizeof(sctp_chunkhdr_t)); + if (!pskb_pull(chunk->skb, ntohs(chunk->chunk_hdr->length) - + sizeof(sctp_chunkhdr_t))) + goto nomem; /* 5.1 D) Upon reception of the COOKIE ECHO chunk, Endpoint * "Z" will reply with a COOKIE ACK chunk after building a TCB @@ -965,7 +966,8 @@ sctp_disposition_t sctp_sf_beat_8_3(const struct sctp_endpoint *ep, */ chunk->subh.hb_hdr = (sctp_heartbeathdr_t *) chunk->skb->data; paylen = ntohs(chunk->chunk_hdr->length) - sizeof(sctp_chunkhdr_t); - skb_pull(chunk->skb, paylen); + if (!pskb_pull(chunk->skb, paylen)) + goto nomem; reply = sctp_make_heartbeat_ack(asoc, chunk, chunk->subh.hb_hdr, paylen); @@ -1860,8 +1862,9 @@ sctp_disposition_t sctp_sf_do_5_2_4_dupcook(const struct sctp_endpoint *ep, * are in good shape. */ chunk->subh.cookie_hdr = (struct sctp_signed_cookie *)chunk->skb->data; - skb_pull(chunk->skb, ntohs(chunk->chunk_hdr->length) - - sizeof(sctp_chunkhdr_t)); + if (!pskb_pull(chunk->skb, ntohs(chunk->chunk_hdr->length) - + sizeof(sctp_chunkhdr_t))) + goto nomem; /* In RFC 2960 5.2.4 3, if both Verification Tags in the State Cookie * of a duplicate COOKIE ECHO match the Verification Tags of the |