From: Dan Carpenter <[email protected]> 3.12-stable review patch. If anyone has any objections, please let me know.
=============== commit f2e323ec96077642d397bb1c355def536d489d16 upstream. We need to add a limit check here so we don't overflow the buffer. Signed-off-by: Dan Carpenter <[email protected]> Signed-off-by: Mauro Carvalho Chehab <[email protected]> Signed-off-by: Jiri Slaby <[email protected]> --- drivers/media/usb/ttusb-dec/ttusbdecfe.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/media/usb/ttusb-dec/ttusbdecfe.c b/drivers/media/usb/ttusb-dec/ttusbdecfe.c index 5c45c9d0712d..9c29552aedec 100644 --- a/drivers/media/usb/ttusb-dec/ttusbdecfe.c +++ b/drivers/media/usb/ttusb-dec/ttusbdecfe.c @@ -156,6 +156,9 @@ static int ttusbdecfe_dvbs_diseqc_send_master_cmd(struct dvb_frontend* fe, struc 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; + if (cmd->msg_len > sizeof(b) - 4) + return -EINVAL; + memcpy(&b[4], cmd->msg, cmd->msg_len); state->config->send_command(fe, 0x72, -- 2.1.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
