Messages in this thread Patch in this message | | | Date | Wed, 23 Nov 2005 15:44:21 -0800 | From | Greg Kroah-Hartman <> | Subject | [patch 05/22] hwmon: Fix missing boundary check when setting W83627THF in0 limits |
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From: Yuan Mu <Ymu@winbond.com.tw>
Add SENSORS_LIMIT in store VCore limit functions. This fixes a potential u8 overflow on out-of-range user input.
Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> --- drivers/hwmon/w83627hf.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)
--- usb-2.6.orig/drivers/hwmon/w83627hf.c +++ usb-2.6/drivers/hwmon/w83627hf.c @@ -456,7 +456,9 @@ static ssize_t store_regs_in_min0(struct (w83627thf == data->type || w83637hf == data->type)) /* use VRM9 calculation */ - data->in_min[0] = (u8)(((val * 100) - 70000 + 244) / 488); + data->in_min[0] = + SENSORS_LIMIT(((val * 100) - 70000 + 244) / 488, 0, + 255); else /* use VRM8 (standard) calculation */ data->in_min[0] = IN_TO_REG(val); @@ -481,7 +483,9 @@ static ssize_t store_regs_in_max0(struct (w83627thf == data->type || w83637hf == data->type)) /* use VRM9 calculation */ - data->in_max[0] = (u8)(((val * 100) - 70000 + 244) / 488); + data->in_max[0] = + SENSORS_LIMIT(((val * 100) - 70000 + 244) / 488, 0, + 255); else /* use VRM8 (standard) calculation */ data->in_max[0] = IN_TO_REG(val); -- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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