Commit 000e6751 authored by Johann Friedrichs's avatar Johann Friedrichs Committed by Mauro Carvalho Chehab
Browse files

media: dvb-core: Fix receiving invalid EIT-sections 



Resetting buf without resetting pusi_seen at a channel-switch can lead
to copying the rest of a section to the start of buf, but treating it as
a complete section, when the next pusi arrives.
EIT-sections starting without valid header were randomly received during
an EIT-scan on a transponder.

Signed-off-by: default avatarJohann Friedrichs <johann.friedrichs@web.de>
Signed-off-by: default avatarSean Young <sean@mess.org>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+huawei@kernel.org>
parent c1249513

drivers/media/dvb-core/dvb_demux.c

+1 −0
Original line number Diff line number Diff line
@@ -971,6 +971,7 @@ static int dmx_section_feed_start_filtering(struct dmx_section_feed *feed) 
	dvbdmxfeed->feed.sec.secbuf = dvbdmxfeed->feed.sec.secbuf_base;

	dvbdmxfeed->feed.sec.secbufp = 0;

	dvbdmxfeed->feed.sec.seclen = 0;

	dvbdmxfeed->pusi_seen = false;



	if (!dvbdmx->start_feed) {

		mutex_unlock(&dvbdmx->mutex);