diff options
Diffstat (limited to 'openbsc')
| -rw-r--r-- | openbsc/src/libmsc/gsm_04_11.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/openbsc/src/libmsc/gsm_04_11.c b/openbsc/src/libmsc/gsm_04_11.c index f22a7e15b..9e00bdac7 100644 --- a/openbsc/src/libmsc/gsm_04_11.c +++ b/openbsc/src/libmsc/gsm_04_11.c @@ -762,6 +762,18 @@ int gsm0411_rcv_sms(struct gsm_subscriber_connection *conn, DEBUGP(DLSMS, "receiving data (trans_id=%x)\n", transaction_id); trans = trans_find_by_id(conn->subscr, GSM48_PDISC_SMS, transaction_id); + + /* + * A transaction we created but don't know about? + */ + if (!trans && (transaction_id & 0x8) == 0) { + LOGP(DLSMS, LOGL_ERROR, "trans_id=%x allocated by us but known " + "to us anymore. We are ignoring it, maybe a CP-ERROR " + "from a MS?\n", + transaction_id); + return -EINVAL; + } + if (!trans) { DEBUGP(DLSMS, " -> (new transaction)\n"); trans = trans_alloc(conn->subscr, GSM48_PDISC_SMS, |