Jonathan Cameron 7005a4885a iio:health:afe4404 Fix timestamp alignment and prevent data leak. ... [ Upstream commit f88ecccac4 ] One of a class of bugs pointed out by Lars in a recent review. iio_push_to_buffers_with_timestamp assumes the buffer used is aligned to the size of the timestamp (8 bytes). This is not guaranteed in this driver which uses a 40 byte array of smaller elements on the stack. As Lars also noted this anti pattern can involve a leak of data to userspace and that indeed can happen here. We close both issues by moving to a suitable structure in the iio_priv() data with alignment explicitly requested. This data is allocated with kzalloc so no data can leak appart from previous readings. Fixes: 87aec56e27 ("iio: health: Add driver for the TI AFE4404 heart monitor") Reported-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Acked-by: Andrew F. Davis <afd@ti.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2020-07-22 09:33:00 +02:00
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Kconfig	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
Makefile	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
afe440x.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174	2019-05-30 11:26:41 -07:00
afe4403.c	iio:health:afe4403 Fix timestamp alignment and prevent data leak.	2020-07-22 09:32:54 +02:00
afe4404.c	iio:health:afe4404 Fix timestamp alignment and prevent data leak.	2020-07-22 09:33:00 +02:00
max30100.c	iio: add SPDX identifier for various drivers	2018-02-18 11:55:19 +00:00
max30102.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157	2019-05-30 11:26:37 -07:00