# CVE-2021-47172: linux: In the Linux kernel, the following vulnerability has been resolved:  iio: adc: ad7124: Fix potential overflow due to...

CVE-2021-47172 is fixed in linux on 1 platform, first by DEBIAN-CVE-2021-47172, released March 25, 2024. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2021-47172
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0023
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Mar 25, 2024

## Description

In the Linux kernel, the following vulnerability has been resolved:  iio: adc: ad7124: Fix potential overflow due to non sequential channel numbers  Channel numbering must start at 0 and then not have any holes, or it is possible to overflow the available storage.  Note this bug was introduced as part of a fix to ensure we didn't rely on the ordering of child nodes.  So we need to support arbitrary ordering but they all need to be there somewhere.  Note I hit this when using qemu to test the rest of this series. Arguably this isn't the best fix, but it is probably the most minimal option for backporting etc.  Alexandru's sign-off is here because he carried this patch in a larger set that Jonathan then applied.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 5.14.6-1 | [DEBIAN-CVE-2021-47172](https://patchblox.com/security/data/fix/linux/debian-cve-2021-47172.md) | Mar 25, 2024 |
| Linux | linux Debian 13.5 (trixie) | 5.14.6-1 | [DEBIAN-CVE-2021-47172](https://patchblox.com/security/data/fix/linux/debian-cve-2021-47172.md) | Mar 25, 2024 |
| Linux | linux Debian 14 | 5.14.6-1 | [DEBIAN-CVE-2021-47172](https://patchblox.com/security/data/fix/linux/debian-cve-2021-47172.md) | Mar 25, 2024 |

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