vulnerability
Ubuntu: (CVE-2022-49031): linux vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 6 | (AV:L/AC:L/Au:S/C:C/I:N/A:C) | 2024-10-21 | 2024-11-19 | 2025-02-11 |
Description
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.
Solution(s)
References
- CVE-2022-49031
- https://attackerkb.com/topics/CVE-2022-49031
- URL-https://git.kernel.org/linus/58143c1ed5882c138a3cd2251a336fc8755f23d9
- URL-https://git.kernel.org/stable/c/06c6ce21cec77dfa860d57e7a006000a57812efb
- URL-https://git.kernel.org/stable/c/2d6a437064ffbe685c67ddb16dfc0946074c6c3f
- URL-https://git.kernel.org/stable/c/58143c1ed5882c138a3cd2251a336fc8755f23d9
- URL-https://git.kernel.org/stable/c/726fa3e4ab97dcff1c745bdc4fb137366cb8d3df
- URL-https://git.kernel.org/stable/c/98afcb5f3be645d330c74c5194ba0d80e26f95e0
- URL-https://git.kernel.org/stable/c/b1756af172fb80a3edc143772d49e166ec691b6c
- URL-https://git.kernel.org/stable/c/c9268df36818ee4eaaaeadc80009b442a5ca69c9
- URL-https://git.kernel.org/stable/c/e7e76a77aabef8989cbc0a8417af1aa040620867
- URL-https://www.cve.org/CVERecord?id=CVE-2022-49031
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