Commit 667c952e authored Nov 05, 2014 by Mauro Carvalho Chehab

[media] cx22700: Fix potential buffer overflow

As new FEC types were added, we need a check to avoid overflows:
drivers/media/dvb-frontends/cx22700.c:172 cx22700_set_tps() error: buffer overflow 'fec_tab' 6 <= 6
drivers/media/dvb-frontends/cx22700.c:173 cx22700_set_tps() error: buffer overflow 'fec_tab' 6 <= 6

Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

parent b9f62ffe

drivers/media/dvb-frontends/cx22700.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -169,6 +169,9 @@ static int cx22700_set_tps(struct cx22700_state *state,

		cx22700_writereg (state, 0x04, val);

		if (p->code_rate_HP - FEC_1_2 >= sizeof(fec_tab) \|\|
		p->code_rate_LP - FEC_1_2 >= sizeof(fec_tab))
		return -EINVAL;
		val = fec_tab[p->code_rate_HP - FEC_1_2] << 3;
		val \|= fec_tab[p->code_rate_LP - FEC_1_2];