7.1
CWE
125
Advisory Published
Updated

CVE-2022-49031: iio: health: afe4403: Fix oob read in afe4403_read_raw

First published: Mon Oct 21 2024(Updated: )

In the Linux kernel, the following vulnerability has been resolved: iio: health: afe4403: Fix oob read in afe4403_read_raw KASAN report out-of-bounds read as follows: BUG: KASAN: global-out-of-bounds in afe4403_read_raw+0x42e/0x4c0 Read of size 4 at addr ffffffffc02ac638 by task cat/279 Call Trace: afe4403_read_raw iio_read_channel_info dev_attr_show The buggy address belongs to the variable: afe4403_channel_leds+0x18/0xffffffffffffe9e0 This issue can be reproduced by singe command: $ cat /sys/bus/spi/devices/spi0.0/iio\:device0/in_intensity6_raw The array size of afe4403_channel_leds is less than channels, so access with chan->address cause OOB read in afe4403_read_raw. Fix it by moving access before use it.

Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Affected SoftwareAffected VersionHow to fix
Linux Linux kernel>=4.8<4.9.335
Linux Linux kernel>=4.10<4.14.301
Linux Linux kernel>=4.15<4.19.268
Linux Linux kernel>=4.20<5.4.226
Linux Linux kernel>=5.5<5.10.158
Linux Linux kernel>=5.11<5.15.82
Linux Linux kernel>=5.16<6.0.12
Linux Linux kernel=6.1-rc1
Linux Linux kernel=6.1-rc2
Linux Linux kernel=6.1-rc3
Linux Linux kernel=6.1-rc4
Linux Linux kernel=6.1-rc5
Linux Linux kernel=6.1-rc6

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