iio：健康：afe4403：修复 afe4403_read_raw 中的 oob 读取（CVE-2022-49031）

CVE编号

CVE-2022-49031

利用情况

暂无

补丁情况

N/A

披露时间

2024-10-22

漏洞描述

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.

解决建议

建议您更新当前系统或软件至最新版，完成漏洞的修复。

参考链接
https://git.kernel.org/stable/c/06c6ce21cec77dfa860d57e7a006000a57812efb
https://git.kernel.org/stable/c/2d6a437064ffbe685c67ddb16dfc0946074c6c3f
https://git.kernel.org/stable/c/58143c1ed5882c138a3cd2251a336fc8755f23d9
https://git.kernel.org/stable/c/726fa3e4ab97dcff1c745bdc4fb137366cb8d3df
https://git.kernel.org/stable/c/98afcb5f3be645d330c74c5194ba0d80e26f95e0
https://git.kernel.org/stable/c/b1756af172fb80a3edc143772d49e166ec691b6c
https://git.kernel.org/stable/c/c9268df36818ee4eaaaeadc80009b442a5ca69c9
https://git.kernel.org/stable/c/e7e76a77aabef8989cbc0a8417af1aa040620867

受影响软件情况

#	类型	厂商	产品	版本	影响面
1
	运行在以下环境
	系统	debian_11	linux	*		Up to (excluding) 5.10.158-1
	运行在以下环境
	系统	debian_12	linux	*		Up to (excluding) 6.0.12-1

CVSS3评分 N/A

• 攻击路径 N/A
• 攻击复杂度 N/A
• 权限要求 N/A
• 影响范围 N/A
• 用户交互 N/A
• 可用性 N/A
• 保密性 N/A
• 完整性 N/A

N/A

CWE-ID	漏洞类型

Exp相关链接

- avd.aliyun.com