[patch 21/23] [PATCH] hwmon: Fix missing boundary check when setting W83627THF in0 limits

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



-stable review patch.  If anyone has any objections, please let us know.
------------------

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 <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Signed-off-by: Chris Wright <[email protected]>
---
 drivers/hwmon/w83627hf.c |    8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

--- linux-2.6.14.2.orig/drivers/hwmon/w83627hf.c
+++ linux-2.6.14.2/drivers/hwmon/w83627hf.c
@@ -454,7 +454,9 @@ 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);
@@ -479,7 +481,9 @@ 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 [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]
  Powered by Linux