[PATCH] hwmon: scmi: fix potential buffer overflow in scmi_hwmon_probe()
From: Cristian Marussi <cristian.marussi@arm.com>
Date: 2020-07-03 16:43:54
Also in:
lkml
Subsystem:
hardware monitoring, system control & power/management interface (scpi/scmi) message protocol drivers, the rest · Maintainers:
Guenter Roeck, Sudeep Holla, Linus Torvalds
SMATCH detected a potential buffer overflow in the manipulation of hwmon_attributes array inside the scmi_hwmon_probe function: drivers/hwmon/scmi-hwmon.c:226 scmi_hwmon_probe() error: buffer overflow 'hwmon_attributes' 6 <= 9 Fix it by statically declaring the size of the array as the maximum possible as defined by hwmon_max define. Signed-off-by: Cristian Marussi <cristian.marussi@arm.com> --- drivers/hwmon/scmi-hwmon.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/hwmon/scmi-hwmon.c b/drivers/hwmon/scmi-hwmon.c
index 281454c5c5b1..758f66fc9afe 100644
--- a/drivers/hwmon/scmi-hwmon.c
+++ b/drivers/hwmon/scmi-hwmon.c@@ -149,7 +149,7 @@ static enum hwmon_sensor_types scmi_types[] = { [ENERGY] = hwmon_energy, }; -static u32 hwmon_attributes[] = { +static u32 hwmon_attributes[hwmon_max] = { [hwmon_chip] = HWMON_C_REGISTER_TZ, [hwmon_temp] = HWMON_T_INPUT | HWMON_T_LABEL, [hwmon_in] = HWMON_I_INPUT | HWMON_I_LABEL,
--
2.17.1
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