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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2014-09-05 12:09:28 (GMT) |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2014-09-23 19:13:37 (GMT) |
| commit | f2e323ec96077642d397bb1c355def536d489d16 (patch) | |
| tree | 3d8d24ee7d8deb8eb9befe8b3264b1f9b0f5017e | |
| parent | 9380e112f7b9ab83b57062f2164476e76c5533c7 (diff) | |
| download | linux-f2e323ec96077642d397bb1c355def536d489d16.tar.xz | |
[media] ttusb-dec: buffer overflow in ioctl
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>
| -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 5c45c9d..9c29552 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, |