]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commitdiff
hwmon: (nct7802) Fix integer overflow seen when writing voltage limits
authorGuenter Roeck <linux@roeck-us.net>
Sat, 4 Jul 2015 20:23:42 +0000 (13:23 -0700)
committerGuenter Roeck <linux@roeck-us.net>
Thu, 30 Jul 2015 03:06:50 +0000 (20:06 -0700)
Writing a large value into a voltage limit attribute can result
in an overflow due to an auto-conversion from unsigned long to
unsigned int.

Cc: Constantine Shulyupin <const@MakeLinux.com>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Cc: stable@vger.kernel.org # v4.1+
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
drivers/hwmon/nct7802.c

index 28fcb2e246d55a7acc52703e434b98de3e22c45b..fbfc02bb2cfa13c5bc22ece3a47a3cac1af07005 100644 (file)
@@ -195,7 +195,7 @@ abort:
 }
 
 static int nct7802_write_voltage(struct nct7802_data *data, int nr, int index,
-                                unsigned int voltage)
+                                unsigned long voltage)
 {
        int shift = 8 - REG_VOLTAGE_LIMIT_MSB_SHIFT[index - 1][nr];
        int err;