# CVE-2024-42100: clk: sunxi-ng: common: Don't call hw_to_ccu_common on hw without common

> A null pointer dereference in the Linux kernel's sunxi-ng clock driver can cause a system crash, requiring a kernel patch.

- **Severity:** Medium 5.5 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 30 Jul 2024
- **Updated:** 23 May 2026
- **Also known as:** BELL-CVE-2024-42100, DEBIAN-CVE-2024-42100, GHSA-v6gx-hf69-q84x, UBUNTU-CVE-2024-42100

## What is CVE-2024-42100?

CVE-2024-42100 is a medium-severity vulnerability in Linux kernel, published on 30 Jul 2024. It can only be exploited from the same machine or local network, with no action from the victim.

### Official 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.

Weakness: CWE-476 (NULL Pointer Dereference)

## Which versions are affected by CVE-2024-42100?

It affects 1 product.


Products: Linux kernel.

## How do I fix CVE-2024-42100?

Apply the vendor's patch.

## Is CVE-2024-42100 being exploited?

There is no known exploitation of CVE-2024-42100 in the wild and no public exploit code.

## Other vulnerabilities in Linux kernel

- [CVE-2026-53266](https://insights.sbomify.com/CVE-2026-53266/): Linux Kernel Out-of-Bounds Write (high 8.8, exploited in the wild)
- [CVE-2013-6282](https://insights.sbomify.com/CVE-2013-6282/): Linux Kernel Improper Input Validation (high 8.8, exploited in the wild)
- [CVE-2022-0185](https://insights.sbomify.com/CVE-2022-0185/): Linux Kernel Heap-Based Buffer Overflow (high 8.4, exploited in the wild)
- [CVE-2013-2094](https://insights.sbomify.com/CVE-2013-2094/): Linux Kernel Privilege Escalation (high 8.4, exploited in the wild)
- [CVE-2026-53362](https://insights.sbomify.com/CVE-2026-53362/): Linux Kernel Unspecified (high 7.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-42100 and fix it if it is affected.

What it is: CVE-2024-42100 is a medium-severity vulnerability in Linux kernel, published on 30 Jul 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-42100 in the wild and no public exploit code.

Affected product: Linux kernel. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2024-42100/ (Markdown: https://insights.sbomify.com/CVE-2024-42100/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-42100
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-42100
- OSV: https://osv.dev/vulnerability/CVE-2024-42100

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-42100/
Summaries are generated and may contain mistakes; the official description above is the record.