diff options
Diffstat (limited to 'net/sctp/sm_statefuns.c')
| -rw-r--r-- | net/sctp/sm_statefuns.c | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c index b6adef8a1e93..ebcd1eedb115 100644 --- a/net/sctp/sm_statefuns.c +++ b/net/sctp/sm_statefuns.c @@ -1055,6 +1055,7 @@ sctp_disposition_t sctp_sf_beat_8_3(struct net *net, void *arg, sctp_cmd_seq_t *commands) { + sctp_paramhdr_t *param_hdr; struct sctp_chunk *chunk = arg; struct sctp_chunk *reply; size_t paylen = 0; @@ -1072,12 +1073,17 @@ sctp_disposition_t sctp_sf_beat_8_3(struct net *net, * Information field copied from the received HEARTBEAT chunk. */ chunk->subh.hb_hdr = (sctp_heartbeathdr_t *) chunk->skb->data; + param_hdr = (sctp_paramhdr_t *) chunk->subh.hb_hdr; paylen = ntohs(chunk->chunk_hdr->length) - sizeof(sctp_chunkhdr_t); + + if (ntohs(param_hdr->length) > paylen) + return sctp_sf_violation_paramlen(net, ep, asoc, type, arg, + param_hdr, commands); + if (!pskb_pull(chunk->skb, paylen)) goto nomem; - reply = sctp_make_heartbeat_ack(asoc, chunk, - chunk->subh.hb_hdr, paylen); + reply = sctp_make_heartbeat_ack(asoc, chunk, param_hdr, paylen); if (!reply) goto nomem; @@ -6127,6 +6133,8 @@ static int sctp_eat_data(const struct sctp_association *asoc, /* The TSN is too high--silently discard the chunk and * count on it getting retransmitted later. */ + if (chunk->asoc) + chunk->asoc->stats.outofseqtsns++; return SCTP_IERROR_HIGH_TSN; } else if (tmp > 0) { /* This is a duplicate. Record it. */ @@ -6226,10 +6234,14 @@ static int sctp_eat_data(const struct sctp_association *asoc, /* Note: Some chunks may get overcounted (if we drop) or overcounted * if we renege and the chunk arrives again. */ - if (chunk->chunk_hdr->flags & SCTP_DATA_UNORDERED) + if (chunk->chunk_hdr->flags & SCTP_DATA_UNORDERED) { SCTP_INC_STATS(net, SCTP_MIB_INUNORDERCHUNKS); - else { + if (chunk->asoc) + chunk->asoc->stats.iuodchunks++; + } else { SCTP_INC_STATS(net, SCTP_MIB_INORDERCHUNKS); + if (chunk->asoc) + chunk->asoc->stats.iodchunks++; ordered = 1; } |