# CVE-2023-20588: Speculative Leaks

> A division-by-zero error in AMD processors allows speculative execution to leak confidential data, requiring firmware updates.

- **Severity:** Medium 5.5 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N`)
- **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:** Yes
- **Published:** 8 Aug 2023
- **Updated:** 17 Oct 2024
- **Also known as:** ALPINE-CVE-2023-20588, DEBIAN-CVE-2023-20588, GHSA-6h77-2hc9-qm3w, UBUNTU-CVE-2023-20588

## What is CVE-2023-20588?

CVE-2023-20588 is a medium-severity vulnerability in Debian Debian Linux, 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

A division-by-zero error on some AMD processors can potentially return speculative data resulting in loss of confidentiality.

Weakness: CWE-369 (Divide By Zero)

## Which versions are affected by CVE-2023-20588?

It affects 47 products.


Products: Amd Athlon Gold 3150g Firmware, Amd Athlon Gold 3150ge Firmware, Amd Athlon Gold Pro 3150g Firmware, Amd Athlon Gold Pro 3150ge Firmware, Amd Athlon Pro 300ge Firmware, Amd Athlon Silver 3050ge Firmware, Amd Athlon Silver Pro 3125ge Firmware, Amd Epyc 7251 Firmware, Amd Epyc 7261 Firmware, Amd Epyc 7281 Firmware, Amd Epyc 7301 Firmware, Amd Epyc 7351 Firmware, Amd Epyc 7351p Firmware, Amd Epyc 7371 Firmware, Amd Epyc 7401 Firmware, Amd Epyc 7401p Firmware, Amd Epyc 7451 Firmware, Amd Epyc 7501 Firmware, Amd Epyc 7551 Firmware, Amd Epyc 7551p Firmware and 27 more.

## How do I fix CVE-2023-20588?

Apply the vendor's patch.

## Is CVE-2023-20588 being exploited?

There is no known exploitation of CVE-2023-20588 in the wild and no public exploit code.

## Other vulnerabilities in Debian Debian Linux

- [CVE-2021-46753](https://insights.sbomify.com/CVE-2021-46753/): Memory corruption in Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics “Pollock” (critical 9.1)
- [CVE-2021-46754](https://insights.sbomify.com/CVE-2021-46754/): Information disclosure in AMD Ryzen™ Embedded R1000 (critical 9.1)
- [CVE-2022-23815](https://insights.sbomify.com/CVE-2022-23815/): Memory corruption in AMD Athlon™ 3000 Series Desktop Processors with Radeon™ Graphics (high 7.5)
- [CVE-2021-46749](https://insights.sbomify.com/CVE-2021-46749/): Denial of service in 3rd Gen AMD Ryzen™ Threadripper™ Processors “Castle Peak” HEDT (high 7.5)
- [CVE-2021-46794](https://insights.sbomify.com/CVE-2021-46794/): Denial of service in 3rd Gen AMD Ryzen™ Threadripper™ Processors “Castle Peak” HEDT (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-20588 and fix it if it is affected.

What it is: CVE-2023-20588 is a medium-severity vulnerability in Debian Debian Linux, 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-2023-20588 in the wild and no public exploit code.

Affected product: Debian Debian Linux. 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-2023-20588/ (Markdown: https://insights.sbomify.com/CVE-2023-20588/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-20588
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-20588
- OSV: https://osv.dev/vulnerability/CVE-2023-20588

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-20588/
Summaries are generated and may contain mistakes; the official description above is the record.