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authorGuenter Roeck <linux@roeck-us.net>2012-01-16 22:51:47 +0100
committerJean Delvare <khali@endymion.delvare>2012-01-16 22:51:47 +0100
commit6b101116ae445311031f3e9f91d3010d444b9845 (patch)
tree418e5369d31ebdf8aea6bfa4c012e7ac8702ded6
parent2fe28ab51d200121b9c39f9b34cf2d132fcf5de1 (diff)
downloadlinux-6b101116ae445311031f3e9f91d3010d444b9845.tar.bz2
hwmon: (lm90) Add range check to set_update_interval
When writing the update_interval attribute, the parameter value was not range checked, which could cause an integer overflow and result in an arbitrary update interval. Fix by limiting the value range to <0, 100000>. Reported-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Jean Delvare <khali@linux-fr.org>
-rw-r--r--drivers/hwmon/lm90.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c
index bdfd675488ae..d2dd5f90496d 100644
--- a/drivers/hwmon/lm90.c
+++ b/drivers/hwmon/lm90.c
@@ -917,7 +917,7 @@ static ssize_t set_update_interval(struct device *dev,
return err;
mutex_lock(&data->update_lock);
- lm90_set_convrate(client, data, val);
+ lm90_set_convrate(client, data, SENSORS_LIMIT(val, 0, 100000));
mutex_unlock(&data->update_lock);
return count;