diff options
author | Dan Carpenter <dan.carpenter@oracle.com> | 2014-09-05 09:09:28 -0300 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-11-21 09:23:14 -0800 |
commit | 20cd3408e31ba6aecc07d48e1b24cc7ddfd7a988 (patch) | |
tree | 1c7f8d7e5ae16037dd9170eb3713e2aa8d084e15 /drivers | |
parent | b0c08321fc43d1bcfc9fcc5bcc9b756811628831 (diff) |
media: ttusb-dec: buffer overflow in ioctl
commit f2e323ec96077642d397bb1c355def536d489d16 upstream.
We need to add a limit check here so we don't overflow the buffer.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/media/usb/ttusb-dec/ttusbdecfe.c | 3 |
1 files changed, 3 insertions, 0 deletions
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, |