Wei Yongjun 5eb114f55b iio: health: afe4404: Fix oob read in afe4404_[read|write]_raw ... [ Upstream commit fc92d9e3de ] KASAN report out-of-bounds read as follows: BUG: KASAN: global-out-of-bounds in afe4404_read_raw+0x2ce/0x380 Read of size 4 at addr ffffffffc00e4658 by task cat/278 Call Trace: afe4404_read_raw iio_read_channel_info dev_attr_show The buggy address belongs to the variable: afe4404_channel_leds+0x18/0xffffffffffffe9c0 This issue can be reproduce by singe command: $ cat /sys/bus/i2c/devices/0-0058/iio\:device0/in_intensity6_raw The array size of afe4404_channel_leds and afe4404_channel_offdacs are less than channels, so access with chan->address cause OOB read in afe4404_[read|write]_raw. Fix it by moving access before use them. Fixes: b36e825764 ("iio: health/afe440x: Use regmap fields") Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Acked-by: Andrew Davis <afd@ti.com> Link: https://lore.kernel.org/r/20221107152010.95937-1-weiyongjun@huaweicloud.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2022-12-08 11:23:54 +01:00
..
afe440x.h
afe4403.c
afe4404.c	iio: health: afe4404: Fix oob read in afe4404_[read|write]_raw	2022-12-08 11:23:54 +01:00
Kconfig
Makefile
max30100.c
max30102.c