# CVE-2022-23820: Memory corruption in 3rd Gen AMD EPYC™ Processors

> An attacker can corrupt SMRAM via invalid SMM communication buffers, potentially leading to arbitrary code execution on affected AMD processors.

- **Severity:** High 7.5 (`CVSS:3.1/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:** Yes
- **Published:** 14 Nov 2023
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-9fmg-2fcx-q3vf

## What is CVE-2022-23820?

CVE-2022-23820 is a high-severity memory corruption vulnerability in 3rd Gen AMD EPYC™ Processors, published on 14 Nov 2023. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Failure to validate the AMD SMM communication buffer
may allow an attacker to corrupt the SMRAM potentially leading to arbitrary
code execution.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2022-23820?

It affects 105 products.


Products: Amd Athlon 3015ce Firmware, Amd Athlon 3015e Firmware, Amd Ryzen 3 3100 Firmware, Amd Ryzen 3 3300u Firmware, Amd Ryzen 3 3300x Firmware, Amd Ryzen 3 3350u Firmware, Amd Ryzen 3 4300u Firmware, Amd Ryzen 3 5100 Firmware, Amd Ryzen 3 5125c Firmware, Amd Ryzen 3 5400u Firmware, Amd Ryzen 3 5425u Firmware, Amd Ryzen 3 7335u Firmware, Amd Ryzen 5 3450u Firmware, Amd Ryzen 5 3500 Firmware, Amd Ryzen 5 3500c Firmware, Amd Ryzen 5 3500u Firmware, Amd Ryzen 5 3500x Firmware, Amd Ryzen 5 3550h Firmware, Amd Ryzen 5 3580u Firmware, Amd Ryzen 5 3600 Firmware and 85 more.

## How do I fix CVE-2022-23820?

Apply the vendor's patch.

## Is CVE-2022-23820 being exploited?

There is no known exploitation of CVE-2022-23820 in the wild and no public exploit code.

## Other vulnerabilities in 3rd Gen AMD EPYC™ Processors

- [CVE-2022-23821](https://insights.sbomify.com/CVE-2022-23821/): Privilege escalation in AMD Ryzen™ Embedded 5000 (critical 9.8)
- [CVE-2023-20555](https://insights.sbomify.com/CVE-2023-20555/): Memory corruption in Athlon™ 3000 Series Desktop Processors with Radeon™ Graphics “Picasso” (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-23820 and fix it if it is affected.

What it is: CVE-2022-23820 is a high-severity memory corruption vulnerability in 3rd Gen AMD EPYC™ Processors, published on 14 Nov 2023. 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-2022-23820 in the wild and no public exploit code.

Affected product: 3rd Gen AMD EPYC™ Processors. 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-2022-23820/ (Markdown: https://insights.sbomify.com/CVE-2022-23820/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-23820
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-23820
- OSV: https://osv.dev/vulnerability/CVE-2022-23820

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-23820/
Summaries are generated and may contain mistakes; the official description above is the record.