# CVE-2022-50572: ASoC: audio-graph-card: fix refcount leak of cpu_ep in __graph_for_each_link()

> A refcount leak in the Linux kernel's audio-graph-card driver can lead to memory exhaustion and denial of service.

- **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:** 22 Oct 2025
- **Updated:** 11 May 2026
- **Also known as:** DEBIAN-CVE-2022-50572, GHSA-7468-vjg6-f8cm, UBUNTU-CVE-2022-50572

## What is CVE-2022-50572?

CVE-2022-50572 is a memory corruption vulnerability in Linux, published on 22 Oct 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:

ASoC: audio-graph-card: fix refcount leak of cpu_ep in __graph_for_each_link()

The of_get_next_child() returns a node with refcount incremented, and
decrements the refcount of prev. So in the error path of the while loop,
of_node_put() needs be called for cpu_ep.

## Which versions are affected by CVE-2022-50572?


## How do I fix CVE-2022-50572?

Apply the vendor's patch.

## Is CVE-2022-50572 being exploited?

There is no known exploitation of CVE-2022-50572 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-50572 and fix it if it is affected.

What it is: CVE-2022-50572 is a memory corruption vulnerability in Linux, published on 22 Oct 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-2022-50572 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-2022-50572/ (Markdown: https://insights.sbomify.com/CVE-2022-50572/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-50572
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-50572
- OSV: https://osv.dev/vulnerability/CVE-2022-50572

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-50572/
Summaries are generated and may contain mistakes; the official description above is the record.