# CVE-2022-0216: Use after free in QEMU

> A use-after-free in QEMU's LSI53C895A emulation allows a privileged guest user to crash the host process, causing denial of service.

- **Severity:** Medium 4.4 (`CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/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:** Yes
- **Published:** 26 Aug 2022
- **Updated:** 2 Aug 2024
- **Also known as:** DEBIAN-CVE-2022-0216, GHSA-jr85-6g96-46pc, OESA-2022-1907, UBUNTU-CVE-2022-0216

## What is CVE-2022-0216?

CVE-2022-0216 is a medium-severity use after free vulnerability in Fedoraproject Fedora, published on 26 Aug 2022. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A use-after-free vulnerability was found in the LSI53C895A SCSI Host Bus Adapter emulation of QEMU. The flaw occurs while processing repeated messages to cancel the current SCSI request via the lsi_do_msgout function. This flaw allows a malicious privileged user within the guest to crash the QEMU process on the host, resulting in a denial of service.

Weakness: CWE-416 (Use After Free)

## Which versions are affected by CVE-2022-0216?

It affects 2 products.


Products: Fedoraproject Fedora, Qemu Qemu.

## How do I fix CVE-2022-0216?

Apply the vendor's patch.

## Is CVE-2022-0216 being exploited?

There is no known exploitation of CVE-2022-0216 in the wild and no public exploit code.

## Other vulnerabilities in Fedoraproject Fedora

- [CVE-2024-4577](https://insights.sbomify.com/CVE-2024-4577/): PHP-CGI OS Command Injection (critical 9.8, exploited in the wild)
- [CVE-2021-39226](https://insights.sbomify.com/CVE-2021-39226/): Grafana Authentication Bypass (critical 9.8, exploited in the wild)
- [CVE-2019-5544](https://insights.sbomify.com/CVE-2019-5544/): VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow (critical 9.8, exploited in the wild)
- [CVE-2024-4947](https://insights.sbomify.com/CVE-2024-4947/): Google Chromium V8 Type Confusion (critical 9.6, exploited in the wild)
- [CVE-2024-4671](https://insights.sbomify.com/CVE-2024-4671/): Google Chromium Visuals Use-After-Free (critical 9.6, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-0216 and fix it if it is affected.

What it is: CVE-2022-0216 is a medium-severity use after free vulnerability in Fedoraproject Fedora, published on 26 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-2022-0216 in the wild and no public exploit code.

Affected product: Fedoraproject Fedora. 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-2022-0216/ (Markdown: https://insights.sbomify.com/CVE-2022-0216/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-0216
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-0216
- OSV: https://osv.dev/vulnerability/CVE-2022-0216

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-0216/
Summaries are generated and may contain mistakes; the official description above is the record.