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

BugLink: https://bugs.launchpad.net/bugs/2106770

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>
CVE-2024-57908
Signed-off-by: Manuel Diewald <manuel.diewald@canonical.com>
Signed-off-by: Mehmet Basaran <mehmet.basaran@canonical.com>

This commit is contained in:

Javier Carrasco

2024-11-25 22:16:13 +01:00

committed by

Mehmet Basaran

parent b4619167e3

commit 697a86fcb4

1 changed files with 1 additions and 1 deletions

									
										drivers/iio/imu/kmx61.c
									
		+1
		-1
	
												View File
												
				@@ -1192,7 +1192,7 @@ 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;