From: Mauro Carvalho Chehab <mche...@osg.samsung.com>
[ Upstream commit 82e3b88b679049f043fe9b03991d6d66fc0a43c8 ]
The maximum size for a DiSEqC command is 6, according to the
userspace API. However, the code allows to write up much more values:
drivers/media/dvb-frontends/cx24116.c:983 cx24116_send_diseqc_msg()
error: buffer overflow 'd->msg' 6 <= 23
Cc: stable@vger.kernel.org
Signed-off-by: Mauro Carvalho Chehab <mche...@osg.samsung.com>
Signed-off-by: Sasha Levin <sasha.le...@oracle.com>
---
drivers/media/dvb-frontends/cx24117.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/media/dvb-frontends/cx24117.c
b/drivers/media/dvb-frontends/cx24117.c
index a6c3c9e..d2eab06 100644
--- a/drivers/media/dvb-frontends/cx24117.c
+++ b/drivers/media/dvb-frontends/cx24117.c
@@ -1043,7 +1043,7 @@ static int cx24117_send_diseqc_msg(struct dvb_frontend
*fe,
dev_dbg(&state->priv->i2c->dev, ")\n");
/* Validate length */
- if (d->msg_len > 15)
+ if (d->msg_len > sizeof(d->msg))
return -EINVAL;
/* DiSEqC message */
--
2.1.0
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