# CVE-2026-122113: CVE-2026-122113


- **Severity:** Medium 4.3 (`CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Fix available:** No
- **Published:** 6 Nov 2026
- **Updated:** 10 Nov 2026
- **Also known as:** GHSA-243x-4g43-9fcq

## What is CVE-2026-122113?

CVE-2026-122113 is a medium-severity vulnerability in Realtek RtUsbA64.sys, published on 6 Nov 2026. 

### Official description

A vulnerability in Realtek's RtUsbA64.sys USB audio driver allows a physically present attacker using a maliciously crafted USB device to trigger unbounded recursion in the driver's topology-parsing logic during device enumeration. Processing the crafted descriptor exhausts the kernel stack and causes a system crash (bugcheck), resulting in a denial of service. No authenticated user session is required.

Weakness: CWE-674 (Uncontrolled Recursion)

## Which versions are affected by CVE-2026-122113?


## How do I fix CVE-2026-122113?

No fix has been published for CVE-2026-122113 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-122113 being exploited?

There is no known exploitation of CVE-2026-122113 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-122113 and fix it if it is affected.

What it is: CVE-2026-122113 is a medium-severity vulnerability in Realtek RtUsbA64.sys, published on 6 Nov 2026. 
Exploitation: There is no known exploitation of CVE-2026-122113 in the wild and no public exploit code.

Affected product: Realtek RtUsbA64.sys. 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-2026-122113/ (Markdown: https://insights.sbomify.com/CVE-2026-122113/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-122113
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-122113
- OSV: https://osv.dev/vulnerability/CVE-2026-122113

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-122113/
Summaries are generated and may contain mistakes; the official description above is the record.