diff options
| -rw-r--r-- | src/gsm0480.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/gsm0480.c b/src/gsm0480.c index 73be8acd..4b1471f1 100644 --- a/src/gsm0480.c +++ b/src/gsm0480.c @@ -386,6 +386,12 @@ static int parse_process_uss_req(const uint8_t *uss_req_data, uint16_t length, int num_chars; uint8_t dcs; + + /* we need at least that much */ + if (length < 8) + return 0; + + if (uss_req_data[0] == GSM_0480_SEQUENCE_TAG) { if (uss_req_data[2] == ASN1_OCTET_STRING_TAG) { dcs = uss_req_data[4]; |