smsutil: Check that udl is less than 140

diff --git a/src/smsutil.c b/src/smsutil.c
index e634764..fa89446 100644 (file)
--- a/src/smsutil.c
+++ b/src/smsutil.c
@@ -1262,6 +1262,9 @@ static gboolean decode_submit(const unsigned char *pdu, int len,
        if ((len - offset) < expected)
                return FALSE;
 
+       if (expected > (int) sizeof(out->submit.ud))
+               return FALSE;
+
        memcpy(out->submit.ud, pdu+offset, expected);
 
        return TRUE;