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 Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | >=4.8<4.9.335 | |
| Linux Kernel | >=4.10<4.14.301 | |
| Linux Kernel | >=4.15<4.19.268 | |
| Linux Kernel | >=4.20<5.4.226 | |
| Linux Kernel | >=5.5<5.10.158 | |
| Linux Kernel | >=5.11<5.15.82 | |
| Linux Kernel | >=5.16<6.0.12 | |
| Linux Kernel | =6.1-rc1 | |
| Linux Kernel | =6.1-rc2 | |
| Linux Kernel | =6.1-rc3 | |
| Linux Kernel | =6.1-rc4 | |
| Linux Kernel | =6.1-rc5 | |
| Linux Kernel | =6.1-rc6 |
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Reference Links
- https://git.kernel.org/stable/c/98afcb5f3be645d330c74c5194ba0d80e26f95e0
- https://git.kernel.org/stable/c/c9268df36818ee4eaaaeadc80009b442a5ca69c9
- https://git.kernel.org/stable/c/726fa3e4ab97dcff1c745bdc4fb137366cb8d3df
- https://git.kernel.org/stable/c/2d6a437064ffbe685c67ddb16dfc0946074c6c3f
- https://git.kernel.org/stable/c/b1756af172fb80a3edc143772d49e166ec691b6c
- https://git.kernel.org/stable/c/e7e76a77aabef8989cbc0a8417af1aa040620867
- https://git.kernel.org/stable/c/06c6ce21cec77dfa860d57e7a006000a57812efb
- https://git.kernel.org/stable/c/58143c1ed5882c138a3cd2251a336fc8755f23d9
Frequently Asked Questions
What is the severity of CVE-2022-49031?
CVE-2022-49031 has not been assigned a specific CVSS score, but it is categorized under vulnerabilities that can lead to out-of-bounds reads.
How do I fix CVE-2022-49031?
To fix CVE-2022-49031, update the Linux kernel to a version that includes the patch addressing this vulnerability.
Which versions of the Linux kernel are affected by CVE-2022-49031?
CVE-2022-49031 affects Linux kernel versions between 4.8 and 6.1-rc6.
What type of vulnerability is CVE-2022-49031?
CVE-2022-49031 is an out-of-bounds read vulnerability in the Linux kernel.
Is CVE-2022-49031 actively exploited in the wild?
There is no public information indicating that CVE-2022-49031 is actively exploited, but it is important to apply patches promptly.
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