# CVE-2022-35867: Memory corruption in xhyve

> Local attackers with guest code execution can escalate privileges to the hypervisor via a stack buffer overflow in the e1000 device.

- **Severity:** High 7.5 (`CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 3 Aug 2022
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-hpw9-grqm-8q7c

## What is CVE-2022-35867?

CVE-2022-35867 is a high-severity memory corruption vulnerability in xhyve, published on 3 Aug 2022. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

This vulnerability allows local attackers to escalate privileges on affected installations of xhyve. An attacker must first obtain the ability to execute high-privileged code on the target guest system in order to exploit this vulnerability. The specific flaw exists within the e1000 virtual device. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a stack-based buffer. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the hypervisor. Was ZDI-CAN-15056.

Weakness: CWE-121 (Stack-based Buffer Overflow)

## Which versions are affected by CVE-2022-35867?

It affects 1 product.


Products: Xhyve Project Xhyve.

## How do I fix CVE-2022-35867?

No fix has been published for CVE-2022-35867 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-35867 being exploited?

There is no known exploitation of CVE-2022-35867 in the wild and no public exploit code.

## Other vulnerabilities in xhyve

- [CVE-2022-36660](https://insights.sbomify.com/CVE-2022-36660/): Memory corruption in n/a (critical 9.8)
- [CVE-2022-36659](https://insights.sbomify.com/CVE-2022-36659/): Null dereference in n/a (medium 6.5)
- [CVE-2022-36661](https://insights.sbomify.com/CVE-2022-36661/): Null dereference in n/a (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-35867 and fix it if it is affected.

What it is: CVE-2022-35867 is a high-severity memory corruption vulnerability in xhyve, published on 3 Aug 2022. 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-2022-35867 in the wild and no public exploit code.

Affected product: xhyve. 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-2022-35867/ (Markdown: https://insights.sbomify.com/CVE-2022-35867/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-35867
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-35867
- OSV: https://osv.dev/vulnerability/CVE-2022-35867

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-35867/
Summaries are generated and may contain mistakes; the official description above is the record.