gpio: GPIOHANDLE_GET_LINE_VALUES_IOCTL: Fix information leak

[cascardo/linux.git] / drivers / gpio / gpiolib.c

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index db44a7d..7f92f89 100644 (file)
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -344,6 +344,8 @@ static long linehandle_ioctl(struct file *filep, unsigned int cmd,
        if (cmd == GPIOHANDLE_GET_LINE_VALUES_IOCTL) {
                int val;
 
+               memset(&ghd, 0, sizeof(ghd));
+
                /* TODO: check if descriptors are really input */
                for (i = 0; i < lh->numdescs; i++) {
                        val = gpiod_get_value_cansleep(lh->descs[i]);