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From: Axel Lin <axel.lin@ingics.com>
To: lm-sensors@vger.kernel.org
Subject: [lm-sensors] [PATCH v3 1/2] hwmon: (ads1015) Fix out-of-bounds array access
Date: Tue, 05 Aug 2014 01:59:49 +0000	[thread overview]
Message-ID: <1407203989.20206.0.camel@phoenix> (raw)

Current code uses data_rate as array index in ads1015_read_adc() and uses pga
as array index in ads1015_reg_to_mv, so we must make sure both data_rate and
pga settings are in valid value range.
Return -EINVAL if the setting is out-of-range.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
---
 drivers/hwmon/ads1015.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/hwmon/ads1015.c b/drivers/hwmon/ads1015.c
index 7f9dc2f..55030bd 100644
--- a/drivers/hwmon/ads1015.c
+++ b/drivers/hwmon/ads1015.c
@@ -212,6 +212,7 @@ static int ads1015_get_channels_config_of(struct i2c_client *client)
 				dev_err(&client->dev,
 					"invalid gain on %s\n",
 					node->full_name);
+				return -EINVAL;
 			}
 		}
 
@@ -222,6 +223,7 @@ static int ads1015_get_channels_config_of(struct i2c_client *client)
 				dev_err(&client->dev,
 					"invalid data_rate on %s\n",
 					node->full_name);
+				return -EINVAL;
 			}
 		}
 
-- 
1.9.1




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             reply	other threads:[~2014-08-05  1:59 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-08-05  1:59 Axel Lin [this message]
2014-08-05  2:42 ` [lm-sensors] [PATCH v3 1/2] hwmon: (ads1015) Fix out-of-bounds array access Guenter Roeck

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