# CVE-2026-68225: media: i2c: alvium: fix critical pointer access in alvium_ctrl_init

> A missing pointer check in the Alvium I2C camera driver allows a local attacker to trigger a null pointer dereference, causing a system crash.

- **Severity:** Not scored
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 10 Aug 2026
- **Updated:** 17 Aug 2026
- **Also known as:** BELL-CVE-2026-68225, DEBIAN-CVE-2026-68225, GHSA-hrw3-v9rv-877r, UBUNTU-CVE-2026-68225

## What is CVE-2026-68225?

CVE-2026-68225 is a vulnerability in Linux, published on 10 Aug 2026. 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:

media: i2c: alvium: fix critical pointer access in alvium_ctrl_init

The current implementation of alvium_ctrl_init creates several controls in
function alvium_ctrl_init and uses the returned pointer without check. That
can cause write access over NULL-pointer for several controls. The reworked
code checks the pointers before adding flags.

## Which versions are affected by CVE-2026-68225?


## How do I fix CVE-2026-68225?

Apply the vendor's patch.

## Is CVE-2026-68225 being exploited?

There is no known exploitation of CVE-2026-68225 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-68225 and fix it if it is affected.

What it is: CVE-2026-68225 is a vulnerability in Linux, published on 10 Aug 2026. 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-2026-68225 in the wild and no public exploit code.

Affected product: Linux. 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-2026-68225/ (Markdown: https://insights.sbomify.com/CVE-2026-68225/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-68225
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-68225
- OSV: https://osv.dev/vulnerability/CVE-2026-68225

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-68225/
Summaries are generated and may contain mistakes; the official description above is the record.