From 2d04c13a507f5a01daa7422cd52250809573cfdb Mon Sep 17 00:00:00 2001 From: Michael Krufky Date: Thu, 8 Sep 2011 01:17:39 -0300 Subject: [PATCH] [media] dvb-usb: improve sanity check of adap->active_fe in dvb_usb_ctrl_feed The check for (adap->active_fe < 0) at the top of dvb_usb_ctrl_feed is a sanity check to ensure that adap->active_fe is valid. Improve that sanity check by also checking for (adap->active_fe >= adap->num_frontends_initialized) Signed-off-by: Michael Krufky Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb/dvb-usb/dvb-usb-dvb.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/media/dvb/dvb-usb/dvb-usb-dvb.c b/drivers/media/dvb/dvb-usb/dvb-usb-dvb.c index 460b5ae1a45..038679bd495 100644 --- a/drivers/media/dvb/dvb-usb/dvb-usb-dvb.c +++ b/drivers/media/dvb/dvb-usb/dvb-usb-dvb.c @@ -17,7 +17,8 @@ static int dvb_usb_ctrl_feed(struct dvb_demux_feed *dvbdmxfeed, int onoff) if (adap == NULL) return -ENODEV; - if (adap->active_fe < 0) { + if ((adap->active_fe < 0) || + (adap->active_fe >= adap->num_frontends_initialized)) { return -EINVAL; } -- 2.39.5