# CVE-2022-42330: Denial of service in xen

> A guest VM can crash the Xenstore daemon by issuing a soft reset, causing a denial of service for the hypervisor management plane.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 26 Jan 2023
- **Updated:** 3 Aug 2024
- **Also known as:** ALPINE-CVE-2022-42330, DEBIAN-CVE-2022-42330, GHSA-jvpr-73pr-x7v5, UBUNTU-CVE-2022-42330, openSUSE-SU-2024:12644-1

## What is CVE-2022-42330?

CVE-2022-42330 is a high-severity denial of service vulnerability in Xen Xen, published on 26 Jan 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Guests can cause Xenstore crash via soft reset When a guest issues a "Soft Reset" (e.g. for performing a kexec) the libxl based Xen toolstack will normally perform a XS_RELEASE Xenstore operation. Due to a bug in xenstored this can result in a crash of xenstored. Any other use of XS_RELEASE will have the same impact.

## Which versions are affected by CVE-2022-42330?

It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `xen` | openSUSE:Tumbleweed | All versions | 4.17.0_04-1.1 |

Products: Xen Xen.

## How do I fix CVE-2022-42330?

Apply the vendor's patch.

## Is CVE-2022-42330 being exploited?

There is no known exploitation of CVE-2022-42330 in the wild and no public exploit code.

## Other vulnerabilities in Xen Xen

- [CVE-2017-10912](https://insights.sbomify.com/CVE-2017-10912/): Privilege escalation in n/a (critical 10.0)
- [CVE-2017-10918](https://insights.sbomify.com/CVE-2017-10918/): Memory corruption in n/a (critical 10.0)
- [CVE-2017-10920](https://insights.sbomify.com/CVE-2017-10920/): Memory corruption in n/a (critical 10.0)
- [CVE-2017-10921](https://insights.sbomify.com/CVE-2017-10921/): Memory corruption in n/a (critical 10.0)
- [CVE-2025-27466](https://insights.sbomify.com/CVE-2025-27466/): Mutiple vulnerabilities in the Viridian interface (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-42330 and fix it if it is affected.

What it is: CVE-2022-42330 is a high-severity denial of service vulnerability in Xen Xen, published on 26 Jan 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2022-42330 in the wild and no public exploit code.

Affected product: Xen Xen. 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-2022-42330/ (Markdown: https://insights.sbomify.com/CVE-2022-42330/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-42330
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-42330
- OSV: https://osv.dev/vulnerability/CVE-2022-42330

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-42330/
Summaries are generated and may contain mistakes; the official description above is the record.