# CVE-2022-23086: mpr/mps/mpt driver ioctl heap out-of-bounds write

> Local attackers with operator group access can trigger a heap out-of-bounds write in FreeBSD mpr/mps/mpt drivers to escalate privileges.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 15 Feb 2024
- **Updated:** 13 Feb 2025
- **Also known as:** GHSA-8xxh-r5gq-2wxg

## What is CVE-2022-23086?

CVE-2022-23086 is a critical memory corruption vulnerability in Freebsd Freebsd, published on 15 Feb 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Handlers for *_CFG_PAGE read / write ioctls in the mpr, mps, and mpt drivers allocated a buffer of a caller-specified size, but copied to it a fixed size header.  Other heap content would be overwritten if the specified size was too small.

Users with access to the mpr, mps or mpt device node may overwrite heap data, potentially resulting in privilege escalation.  Note that the device node is only accessible to root and members of the operator group.

Weakness: CWE-787 (Out-of-bounds Write), CWE-122 (Heap-based Buffer Overflow)

## Which versions are affected by CVE-2022-23086?

It affects 1 product.


Products: Freebsd Freebsd.

## How do I fix CVE-2022-23086?

No fix has been published for CVE-2022-23086 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-23086 being exploited?

There is no known exploitation of CVE-2022-23086 in the wild and no public exploit code.

## Other vulnerabilities in Freebsd Freebsd

- [CVE-2018-17160](https://insights.sbomify.com/CVE-2018-17160/): Memory corruption in FreeBSD (critical 10.0)
- [CVE-2014-3954](https://insights.sbomify.com/CVE-2014-3954/): Memory corruption in n/a (critical 10.0)
- [CVE-2006-4304](https://insights.sbomify.com/CVE-2006-4304/): Memory corruption in n/a (critical 10.0)
- [CVE-2006-0226](https://insights.sbomify.com/CVE-2006-0226/): Integer overflow in n/a (critical 10.0)
- [CVE-2004-0002](https://insights.sbomify.com/CVE-2004-0002/): Denial of service in n/a (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-23086 and fix it if it is affected.

What it is: CVE-2022-23086 is a critical memory corruption vulnerability in Freebsd Freebsd, published on 15 Feb 2024. 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-2022-23086 in the wild and no public exploit code.

Affected product: Freebsd Freebsd. 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-2022-23086/ (Markdown: https://insights.sbomify.com/CVE-2022-23086/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-23086
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-23086
- OSV: https://osv.dev/vulnerability/CVE-2022-23086

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-23086/
Summaries are generated and may contain mistakes; the official description above is the record.