diff options
| -rw-r--r-- | drivers/media/dvb-core/dvb_frontend.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/media/dvb-core/dvb_frontend.c b/drivers/media/dvb-core/dvb_frontend.c index b30ca59de04f..842b9c8f80c6 100644 --- a/drivers/media/dvb-core/dvb_frontend.c +++ b/drivers/media/dvb-core/dvb_frontend.c @@ -2384,7 +2384,13 @@ static int dvb_frontend_ioctl_legacy(struct file *file, case FE_DISEQC_SEND_MASTER_CMD: if (fe->ops.diseqc_send_master_cmd) { - err = fe->ops.diseqc_send_master_cmd(fe, (struct dvb_diseqc_master_cmd*) parg); + struct dvb_diseqc_master_cmd *cmd = parg; + + if (cmd->msg_len > sizeof(cmd->msg)) { + err = -EINVAL; + break; + } + err = fe->ops.diseqc_send_master_cmd(fe, cmd); fepriv->state = FESTATE_DISEQC; fepriv->status = 0; } |