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authorDan Carpenter <dan.carpenter@oracle.com>2014-09-05 12:09:28 (GMT)
committerMauro Carvalho Chehab <mchehab@osg.samsung.com>2014-09-23 19:13:37 (GMT)
commitf2e323ec96077642d397bb1c355def536d489d16 (patch)
tree3d8d24ee7d8deb8eb9befe8b3264b1f9b0f5017e
parent9380e112f7b9ab83b57062f2164476e76c5533c7 (diff)
[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.c3
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,

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