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iio: imu: kmx61: fix information leak in triggered buffer

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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@vger.kernel.org
Fixes: c3a23ecc09 ("iio: imu: kmx61: Add support for data ready triggers")
Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Link: https://patch.msgid.link/20241125-iio_memset_scan_holes-v1-5-0cb6e98d895c@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Javier Carrasco
2024-11-25 22:16:13 +01:00
committed by Greg Kroah-Hartman
parent 13e56229fc
commit 0871eb8d70
1 changed files with 1 additions and 1 deletions
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2
drivers/iio/imu/kmx61.c
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@@ -1198,7 +1198,7 @@ static irqreturn_t kmx61_trigger_handler(int irq, void *p)
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;