diff options
| author | Dan Carpenter <dan.carpenter@oracle.com> | 2014-09-05 09:09:28 -0300 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2015-01-01 01:27:50 +0000 |
| commit | 2f67670174ad4bd1c48e8b97cc107e3232d422ce (patch) | |
| tree | 42a5239faa2965c066f301c3b84c318d868b1fd2 /drivers/media | |
| parent | 106ed96d46fcaf9f2e72555035fa585403cf4dd3 (diff) | |
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>
[bwh: Backported to 3.2: adjust filename]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/dvb/ttusb-dec/ttusbdecfe.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/media/dvb/ttusb-dec/ttusbdecfe.c b/drivers/media/dvb/ttusb-dec/ttusbdecfe.c index 21260aad1e54..852870b80df3 100644 --- a/drivers/media/dvb/ttusb-dec/ttusbdecfe.c +++ b/drivers/media/dvb/ttusb-dec/ttusbdecfe.c @@ -154,6 +154,9 @@ 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, |