# CVE-2023-20555: Memory corruption in Athlon™ 3000 Series Desktop Processors with Radeon™ Graphics “Picasso”

> Insufficient input validation in AMD SMM allows attackers to corrupt memory and execute arbitrary code in System Management Mode.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/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:** 8 Aug 2023
- **Updated:** 24 Oct 2024
- **Also known as:** GHSA-vcw6-g65p-gcjw

## What is CVE-2023-20555?

CVE-2023-20555 is a high-severity memory corruption vulnerability in AMD Athlon™ 3000 Series Desktop Processors with Radeon™ Graphics “Picasso”, published on 8 Aug 2023. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Insufficient input validation in
CpmDisplayFeatureSmm may allow an attacker to corrupt SMM memory by overwriting
an arbitrary bit in an attacker-controlled pointer potentially leading to
arbitrary code execution in SMM.

Weakness: CWE-787 (Out-of-bounds Write)

## Which versions are affected by CVE-2023-20555?

It affects 119 products.


Products: Amd Athlon 3015ce Firmware, Amd Athlon 3015e Firmware, Amd Athlon Gold 3150c Firmware, Amd Athlon Gold 3150g Firmware, Amd Athlon Gold 3150ge Firmware, Amd Athlon Gold 3150u Firmware, Amd Athlon Gold Pro 3150g Firmware, Amd Athlon Gold Pro 3150ge Firmware, Amd Athlon Pro 300ge Firmware, Amd Athlon Pro 3045b Firmware, Amd Athlon Pro 3145b Firmware, Amd Athlon Silver 3050c Firmware, Amd Athlon Silver 3050e Firmware, Amd Athlon Silver 3050u Firmware, Amd Ryzen 3 3300 Firmware, Amd Ryzen 3 3300u Firmware, Amd Ryzen 3 3300x Firmware, Amd Ryzen 3 3350u Firmware, Amd Ryzen 3 4100 Firmware, Amd Ryzen 3 4300u Firmware and 99 more.

## How do I fix CVE-2023-20555?

No fix has been published for CVE-2023-20555 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-20555 being exploited?

There is no known exploitation of CVE-2023-20555 in the wild and no public exploit code.

## Other vulnerabilities in AMD Athlon™ 3000 Series Desktop Processors with Radeon™ Graphics “Picasso”

- [CVE-2022-23821](https://insights.sbomify.com/CVE-2022-23821/): Privilege escalation in AMD Ryzen™ Embedded 5000 (critical 9.8)
- [CVE-2022-23820](https://insights.sbomify.com/CVE-2022-23820/): Memory corruption in 3rd Gen AMD EPYC™ Processors (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-20555 and fix it if it is affected.

What it is: CVE-2023-20555 is a high-severity memory corruption vulnerability in AMD Athlon™ 3000 Series Desktop Processors with Radeon™ Graphics “Picasso”, published on 8 Aug 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-2023-20555 in the wild and no public exploit code.

Affected product: AMD Athlon™ 3000 Series Desktop Processors with Radeon™ Graphics “Picasso”. 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-2023-20555/ (Markdown: https://insights.sbomify.com/CVE-2023-20555/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-20555
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-20555
- OSV: https://osv.dev/vulnerability/CVE-2023-20555

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From sbomify Insights: https://insights.sbomify.com/CVE-2023-20555/
Summaries are generated and may contain mistakes; the official description above is the record.