CVE-2022-49032: iio: health: afe4404: Fix oob read in afe4404_[read|write]_raw
First published: Mon Oct 21 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: iio: health: afe4404: Fix oob read in afe4404_[read|write]_raw 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.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How 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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Reference Links
- https://git.kernel.org/stable/c/68de7da092f38395dde523f2e5db26eba6c23e28
- https://git.kernel.org/stable/c/113c08030a89aaf406f8a1d4549d758a67c2afba
- https://git.kernel.org/stable/c/f5575041ec15310bdc50c42b8b22118cc900226e
- https://git.kernel.org/stable/c/3f566b626029ca8598d48e5074e56bb37399ca1b
- https://git.kernel.org/stable/c/5eb114f55b37dbc0487aa9c1913b81bb7837f1c4
- https://git.kernel.org/stable/c/f7419fc42afc035f6b29ce713e17dcd2000c833f
- https://git.kernel.org/stable/c/d45d9f45e7b1365fd0d9bf14680d6d5082a590d1
- https://git.kernel.org/stable/c/fc92d9e3de0b2d30a3ccc08048a5fad533e4672b
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