sctp: Add address type check while process paramaters of ASCONF chunk

[linux-2.6-omap-h63xx.git] / net / sctp / sm_make_chunk.c

diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
index 69a464f1d2b98f97970dd219ea705fcea6f20891..6eeee535e94eb188a5c30d09d2a78f1e84337f62 100644 (file)
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -2827,6 +2827,19 @@ static __be16 sctp_process_asconf_param(struct sctp_association *asoc,
        union sctp_addr addr;
        union sctp_addr_param *addr_param;
 
+       switch (addr_param->v4.param_hdr.type) {
+       case SCTP_PARAM_IPV6_ADDRESS:
+               if (!asoc->peer.ipv6_address)
+                       return SCTP_ERROR_INV_PARAM;
+               break;
+       case SCTP_PARAM_IPV4_ADDRESS:
+               if (!asoc->peer.ipv4_address)
+                       return SCTP_ERROR_INV_PARAM;
+               break;
+       default:
+               return SCTP_ERROR_INV_PARAM;
+       }
+
        addr_param = (union sctp_addr_param *)
                        ((void *)asconf_param + sizeof(sctp_addip_param_t));