diff options
-rw-r--r-- | openbsc/src/nat/bsc_nat_utils.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/openbsc/src/nat/bsc_nat_utils.c b/openbsc/src/nat/bsc_nat_utils.c index 2428cbc2e..936026041 100644 --- a/openbsc/src/nat/bsc_nat_utils.c +++ b/openbsc/src/nat/bsc_nat_utils.c @@ -80,6 +80,11 @@ struct bsc_connection *bsc_nat_find_bsc(struct bsc_nat *nat, struct msgb *msg) struct tlv_parsed tp; int i = 0; + if (!msg->l3h || msgb_l3len(msg) < 3) { + LOGP(DNAT, LOGL_ERROR, "Paging message is too short.\n"); + return NULL; + } + tlv_parse(&tp, gsm0808_att_tlvdef(), msg->l3h + 3, msgb_l3len(msg) - 3, 0, 0); if (!TLVP_PRESENT(&tp, GSM0808_IE_CELL_IDENTIFIER_LIST)) { LOGP(DNAT, LOGL_ERROR, "No CellIdentifier List inside paging msg.\n"); |