# CVE-2022-50826: ipu3-imgu: Fix NULL pointer dereference in imgu_subdev_set_selection()

> A local attacker can cause a denial of service in the Linux kernel via a NULL pointer dereference in the IPU3 image processing driver.

- **Severity:** Not scored
- **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 Dec 2025
- **Updated:** 11 May 2026
- **Also known as:** DEBIAN-CVE-2022-50826, GHSA-4gwp-jwmj-8f5v, UBUNTU-CVE-2022-50826

## What is CVE-2022-50826?

CVE-2022-50826 is a vulnerability in Linux, published on 30 Dec 2025. 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:

ipu3-imgu: Fix NULL pointer dereference in imgu_subdev_set_selection()

Calling v4l2_subdev_get_try_crop() and v4l2_subdev_get_try_compose()
with a subdev state of NULL leads to a NULL pointer dereference. This
can currently happen in imgu_subdev_set_selection() when the state
passed in is NULL, as this method first gets pointers to both the "try"
and "active" states and only then decides which to use.

The same issue has been addressed for imgu_subdev_get_selection() with
commit 30d03a0de650 ("ipu3-imgu: Fix NULL pointer dereference in active
selection access"). However the issue still persists in
imgu_subdev_set_selection().

Therefore, apply a similar fix as done in the aforementioned commit to
imgu_subdev_set_selection(). To keep things a bit cleaner, introduce
helper functions for "crop" and "compose" access and use them in both
imgu_subdev_set_selection() and imgu_subdev_get_selection().

## Which versions are affected by CVE-2022-50826?


## How do I fix CVE-2022-50826?

Apply the vendor's patch.

## Is CVE-2022-50826 being exploited?

There is no known exploitation of CVE-2022-50826 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-50826 and fix it if it is affected.

What it is: CVE-2022-50826 is a vulnerability in Linux, published on 30 Dec 2025. 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-2022-50826 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-2022-50826/ (Markdown: https://insights.sbomify.com/CVE-2022-50826/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-50826
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-50826
- OSV: https://osv.dev/vulnerability/CVE-2022-50826

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-50826/
Summaries are generated and may contain mistakes; the official description above is the record.