Commit ddc25bdd authored Jan 07, 2015 by Richard Weinberger Committed by Jonathan Cameron Jan 10, 2015

iio: dht11: Fix out-of-bounds read



As we access i-1 we must not start with i=0.

Signed-off-by: Richard Weinberger <richard@nod.at>
Acked-by: Hartmut Knaack <knaack.h@gmx.de>
Acked-by: Harald Geyer <harald@ccbib.org>
Reviewed-by: Sanjeev Sharma <sanjeev_sharma@mentor.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

parent 8ecb55b8

drivers/iio/humidity/dht11.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -88,7 +88,7 @@ static int dht11_decode(struct dht11 *dht11, int offset)
		unsigned char temp_int, temp_dec, hum_int, hum_dec, checksum;

		/* Calculate timestamp resolution */
		for (i = 0; i < dht11->num_edges; ++i) {
		for (i = 1; i < dht11->num_edges; ++i) {
		t = dht11->edges[i].ts - dht11->edges[i-1].ts;
		if (t > 0 && t < timeres)
		timeres = t;