From: Dan Carpenter <dan.carpen...@oracle.com>
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 <dan.carpen...@oracle.com>
Signed-off-by: Mauro Carvalho Chehab <mche...@osg.samsung.com>
Signed-off-by: Jiri Slaby <jsl...@suse.cz>
---
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
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