From: Javier Carrasco <javier.carrasco.cruz@xxxxxxxxx>
commit 6ae053113f6a226a2303caa4936a4c37f3bfff7b upstream.
The 'buffer' local array is used to push data to user space from a
triggered buffer, but it does not set values for inactive channels, as
it only uses iio_for_each_active_channel() to assign new values.
Initialize the array to zero before using it to avoid pushing
uninitialized information to userspace.
Cc: stable@xxxxxxxxxxxxxxx
Fixes: c3a23ecc0901 ("iio: imu: kmx61: Add support for data ready triggers")
Signed-off-by: Javier Carrasco <javier.carrasco.cruz@xxxxxxxxx>
Link: https://patch.msgid.link/20241125-iio_memset_scan_holes-v1-5-0cb6e98d895c@xxxxxxxxx
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/iio/imu/kmx61.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/iio/imu/kmx61.c
+++ b/drivers/iio/imu/kmx61.c
@@ -1198,7 +1198,7 @@ static irqreturn_t kmx61_trigger_handler
struct kmx61_data *data = kmx61_get_data(indio_dev);
int bit, ret, i = 0;
u8 base;
- s16 buffer[8];
+ s16 buffer[8] = { };
if (indio_dev == data->acc_indio_dev)
base = KMX61_ACC_XOUT_L;
Patches currently in stable-queue which might be from javier.carrasco.cruz@xxxxxxxxx are
queue-5.4/iio-pressure-zpa2326-fix-information-leak-in-triggered-buffer.patch
queue-5.4/iio-dummy-iio_simply_dummy_buffer-fix-information-leak-in-triggered-buffer.patch
queue-5.4/iio-imu-kmx61-fix-information-leak-in-triggered-buffer.patch
queue-5.4/iio-light-vcnl4035-fix-information-leak-in-triggered-buffer.patch
queue-5.4/iio-adc-ti-ads8688-fix-information-leak-in-triggered-buffer.patch
