Messages in this thread Patch in this message | | | From | Richard Weinberger <> | Subject | [PATCH 4/4] iio: dht11: Fix out-of-bounds read | Date | Wed, 3 Dec 2014 00:32:56 +0100 |
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As we access i-1 we must not start with i=0.
Signed-off-by: Richard Weinberger <richard@nod.at> --- drivers/iio/humidity/dht11.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iio/humidity/dht11.c b/drivers/iio/humidity/dht11.c index fbcd7cb..5dfe71b 100644 --- a/drivers/iio/humidity/dht11.c +++ b/drivers/iio/humidity/dht11.c @@ -90,7 +90,7 @@ 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; -- 1.8.4.5
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