cfg80211: fix NULL ptr deref

[safe/jmp/linux-2.6] / net / sctp / sm_make_chunk.c

diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
index 6851ee9..9d881a6 100644 (file)
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -2861,22 +2861,27 @@ static __be16 sctp_process_asconf_param(struct sctp_association *asoc,
        addr_param = (union sctp_addr_param *)
                        ((void *)asconf_param + sizeof(sctp_addip_param_t));
 
+       if (asconf_param->param_hdr.type != SCTP_PARAM_ADD_IP &&
+           asconf_param->param_hdr.type != SCTP_PARAM_DEL_IP &&
+           asconf_param->param_hdr.type != SCTP_PARAM_SET_PRIMARY)
+               return SCTP_ERROR_UNKNOWN_PARAM;
+
        switch (addr_param->v4.param_hdr.type) {
        case SCTP_PARAM_IPV6_ADDRESS:
                if (!asoc->peer.ipv6_address)
-                       return SCTP_ERROR_INV_PARAM;
+                       return SCTP_ERROR_DNS_FAILED;
                break;
        case SCTP_PARAM_IPV4_ADDRESS:
                if (!asoc->peer.ipv4_address)
-                       return SCTP_ERROR_INV_PARAM;
+                       return SCTP_ERROR_DNS_FAILED;
                break;
        default:
-               return SCTP_ERROR_INV_PARAM;
+               return SCTP_ERROR_DNS_FAILED;
        }
 
        af = sctp_get_af_specific(param_type2af(addr_param->v4.param_hdr.type));
        if (unlikely(!af))
-               return SCTP_ERROR_INV_PARAM;
+               return SCTP_ERROR_DNS_FAILED;
 
        af->from_addr_param(&addr, addr_param, htons(asoc->peer.port), 0);
 
@@ -2886,7 +2891,7 @@ static __be16 sctp_process_asconf_param(struct sctp_association *asoc,
         *  make sure we check for that)
         */
        if (!af->is_any(&addr) && !af->addr_valid(&addr, NULL, asconf->skb))
-               return SCTP_ERROR_INV_PARAM;
+               return SCTP_ERROR_DNS_FAILED;
 
        switch (asconf_param->param_hdr.type) {
        case SCTP_PARAM_ADD_IP:
@@ -2954,13 +2959,10 @@ static __be16 sctp_process_asconf_param(struct sctp_association *asoc,
 
                peer = sctp_assoc_lookup_paddr(asoc, &addr);
                if (!peer)
-                       return SCTP_ERROR_INV_PARAM;
+                       return SCTP_ERROR_DNS_FAILED;
 
                sctp_assoc_set_primary(asoc, peer);
                break;
-       default:
-               return SCTP_ERROR_INV_PARAM;
-               break;
        }
 
        return SCTP_ERROR_NO_ERROR;
@@ -3104,7 +3106,7 @@ done:
 }
 
 /* Process a asconf parameter that is successfully acked. */
-static int sctp_asconf_param_success(struct sctp_association *asoc,
+static void sctp_asconf_param_success(struct sctp_association *asoc,
                                     sctp_addip_param_t *asconf_param)
 {
        struct sctp_af *af;
@@ -3113,7 +3115,6 @@ static int sctp_asconf_param_success(struct sctp_association *asoc,
        union sctp_addr_param *addr_param;
        struct sctp_transport *transport;
        struct sctp_sockaddr_entry *saddr;
-       int retval = 0;
 
        addr_param = (union sctp_addr_param *)
                        ((void *)asconf_param + sizeof(sctp_addip_param_t));
@@ -3133,10 +3134,18 @@ static int sctp_asconf_param_success(struct sctp_association *asoc,
                                saddr->state = SCTP_ADDR_SRC;
                }
                local_bh_enable();
+               list_for_each_entry(transport, &asoc->peer.transport_addr_list,
+                               transports) {
+                       if (transport->state == SCTP_ACTIVE)
+                               continue;
+                       dst_release(transport->dst);
+                       sctp_transport_route(transport, NULL,
+                                            sctp_sk(asoc->base.sk));
+               }
                break;
        case SCTP_PARAM_DEL_IP:
                local_bh_disable();
-               retval = sctp_del_bind_addr(bp, &addr);
+               sctp_del_bind_addr(bp, &addr);
                local_bh_enable();
                list_for_each_entry(transport, &asoc->peer.transport_addr_list,
                                transports) {
@@ -3148,8 +3157,6 @@ static int sctp_asconf_param_success(struct sctp_association *asoc,
        default:
                break;
        }
-
-       return retval;
 }
 
 /* Get the corresponding ASCONF response error code from the ASCONF_ACK chunk
@@ -3266,14 +3273,14 @@ int sctp_process_asconf_ack(struct sctp_association *asoc,
 
                switch (err_code) {
                case SCTP_ERROR_NO_ERROR:
-                       retval = sctp_asconf_param_success(asoc, asconf_param);
+                       sctp_asconf_param_success(asoc, asconf_param);
                        break;
 
                case SCTP_ERROR_RSRC_LOW:
                        retval = 1;
                        break;
 
-               case SCTP_ERROR_INV_PARAM:
+               case SCTP_ERROR_UNKNOWN_PARAM:
                        /* Disable sending this type of asconf parameter in
                         * future.
                         */