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-rw-r--r--net/sctp/sm_statefuns.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c
index 174f7a7c6cd..8bc279219a7 100644
--- a/net/sctp/sm_statefuns.c
+++ b/net/sctp/sm_statefuns.c
@@ -1019,6 +1019,12 @@ sctp_disposition_t sctp_sf_backbeat_8_3(const struct sctp_endpoint *ep,
commands);
hbinfo = (sctp_sender_hb_info_t *) chunk->skb->data;
+ /* Make sure that the length of the parameter is what we expect */
+ if (ntohs(hbinfo->param_hdr.length) !=
+ sizeof(sctp_sender_hb_info_t)) {
+ return SCTP_DISPOSITION_DISCARD;
+ }
+
from_addr = hbinfo->daddr;
link = sctp_assoc_lookup_paddr(asoc, &from_addr);