Jonathan Cameron 5a6378911f iio:humidity:hts221 Fix alignment and data leak issues ... commit 5c49056ad9 upstream. 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 an 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. This data is allocated with kzalloc so no data can leak apart from previous readings. Explicit alignment of ts needed to ensure consistent padding on all architectures (particularly x86_32 with it's 4 byte alignment of s64) Fixes: e4a70e3e7d ("iio: humidity: add support to hts221 rh/temp combo device") Reported-by: Lars-Peter Clausen <lars@metafoo.de> Acked-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2020-07-22 09:32:54 +02:00
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Kconfig	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
Makefile	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
am2315.c	iio: humidity: Use device-managed APIs	2019-07-27 22:52:06 +01:00
dht11.c	Staging / IIO driver update for 5.3-rc1	2019-07-11 15:36:02 -07:00
hdc100x.c	iio:humidity:hdc100x Fix alignment and data leak issues	2020-07-22 09:32:53 +02:00
hid-sensor-humidity.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 309	2019-06-05 17:37:04 +02:00
hts221.h	iio:humidity:hts221 Fix alignment and data leak issues	2020-07-22 09:32:54 +02:00
hts221_buffer.c	iio:humidity:hts221 Fix alignment and data leak issues	2020-07-22 09:32:54 +02:00
hts221_core.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 177	2019-05-30 11:29:19 -07:00
hts221_i2c.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 177	2019-05-30 11:29:19 -07:00
hts221_spi.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 177	2019-05-30 11:29:19 -07:00
htu21.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 177	2019-05-30 11:29:19 -07:00
si7005.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 330	2019-06-05 17:37:06 +02:00
si7020.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 491	2019-06-19 17:09:52 +02:00