# CVE-2022-31226: Memory corruption in CPG BIOS

> A local authenticated attacker can exploit a stack-based buffer overflow in Dell BIOS to achieve arbitrary code execution and privilege escalation.

- **Severity:** High 7.1 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 12 Sep 2022
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-93xc-8f45-qxx3

## What is CVE-2022-31226?

CVE-2022-31226 is a high-severity memory corruption vulnerability in Dell CPG BIOS, published on 12 Sep 2022. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Dell BIOS versions contain a Stack-based Buffer Overflow vulnerability. A local authenticated malicious user could potentially exploit this vulnerability by sending excess data to a function in order to gain arbitrary code execution on the system.

Weakness: CWE-787 (Out-of-bounds Write), CWE-121 (Stack-based Buffer Overflow)

## Which versions are affected by CVE-2022-31226?

It affects 25 products.


Products: Dell Chengming 3900 Firmware, Dell Inspiron 14 Plus 7420 Firmware, Dell Inspiron 16 Plus 7620 Firmware, Dell Inspiron 3910 Firmware, Dell Inspiron 5320 Firmware, Dell Inspiron 5420 Firmware, Dell Inspiron 5620 Firmware, Dell Inspiron 7420 Firmware, Dell Inspiron 7620 Firmware, Dell Optiplex 3000 Firmware, Dell Optiplex 3000 Thin Client Firmware, Dell Optiplex 5000 Firmware, Dell Optiplex 5400 Firmware, Dell Optiplex 7000 Firmware, Dell Optiplex 7000 Oem Firmware, Dell Optiplex 7400 Firmware, Dell Precision 3460 Small Form Factor Firmware, Dell Precision 3660 Tower Firmware, Dell Precision 5770 Firmware, Dell Vostro 3710 Firmware and 5 more.

## How do I fix CVE-2022-31226?

No fix has been published for CVE-2022-31226 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-31226 being exploited?

There is no known exploitation of CVE-2022-31226 in the wild and no public exploit code.

## Other vulnerabilities in Dell CPG BIOS

- [CVE-2022-31220](https://insights.sbomify.com/CVE-2022-31220/): Other in CPG BIOS (low 3.0)
- [CVE-2022-31225](https://insights.sbomify.com/CVE-2022-31225/): Other in CPG BIOS (low 3.0)
- [CVE-2022-31221](https://insights.sbomify.com/CVE-2022-31221/): Information disclosure in CPG BIOS (low 2.3)
- [CVE-2022-31222](https://insights.sbomify.com/CVE-2022-31222/): Denial of service in CPG BIOS (low 2.3)
- [CVE-2022-31223](https://insights.sbomify.com/CVE-2022-31223/): Null dereference in CPG BIOS (low 2.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-31226 and fix it if it is affected.

What it is: CVE-2022-31226 is a high-severity memory corruption vulnerability in Dell CPG BIOS, published on 12 Sep 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-2022-31226 in the wild and no public exploit code.

Affected product: Dell CPG BIOS. 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-2022-31226/ (Markdown: https://insights.sbomify.com/CVE-2022-31226/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-31226
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-31226
- OSV: https://osv.dev/vulnerability/CVE-2022-31226

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From sbomify Insights: https://insights.sbomify.com/CVE-2022-31226/
Summaries are generated and may contain mistakes; the official description above is the record.