# CVE-2021-46758: Information disclosure in AMD Ryzen™ 5000 Series Processors with Radeon™ Graphics “Barcelo”

> An attacker can read memory beyond SPI flash due to insufficient address validation in the AMD Secure Processor bootloader, risking data exposure and system integrity.

- **Severity:** Medium 6.1 (`CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 14 Nov 2023
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-qvg6-x224-c55m

## What is CVE-2021-46758?

CVE-2021-46758 is a medium-severity vulnerability in AMD Ryzen™ 5000 Series Processors with Radeon™ Graphics  “Barcelo”, 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

Insufficient validation of SPI flash addresses in the ASP (AMD Secure Processor) bootloader may allow an attacker to read data in memory mapped beyond SPI flash resulting in a potential loss of availability and integrity.

## Which versions are affected by CVE-2021-46758?

It affects 61 products.


Products: Amd Ryzen 3 4300u Firmware, Amd Ryzen 3 5125c Firmware, Amd Ryzen 3 5300g Firmware, Amd Ryzen 3 5300ge Firmware, Amd Ryzen 3 5300u Firmware, Amd Ryzen 3 5400u Firmware, Amd Ryzen 3 5425u Firmware, Amd Ryzen 3 7335u Firmware, Amd Ryzen 3 Pro 7330u Firmware, Amd Ryzen 5 4500u Firmware, Amd Ryzen 5 4600h Firmware, Amd Ryzen 5 4600hs Firmware, Amd Ryzen 5 4600u Firmware, Amd Ryzen 5 4680u Firmware, Amd Ryzen 5 5500h Firmware, Amd Ryzen 5 5500u Firmware, Amd Ryzen 5 5560u Firmware, Amd Ryzen 5 5600g Firmware, Amd Ryzen 5 5600ge Firmware, Amd Ryzen 5 5600h Firmware and 41 more.

## How do I fix CVE-2021-46758?

No fix has been published for CVE-2021-46758 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-46758 being exploited?

There is no known exploitation of CVE-2021-46758 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-46758 and fix it if it is affected.

What it is: CVE-2021-46758 is a medium-severity vulnerability in AMD Ryzen™ 5000 Series Processors with Radeon™ Graphics  “Barcelo”, 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-2021-46758 in the wild and no public exploit code.

Affected product: AMD Ryzen™ 5000 Series Processors with Radeon™ Graphics  “Barcelo”. 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-2021-46758/ (Markdown: https://insights.sbomify.com/CVE-2021-46758/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-46758
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-46758
- OSV: https://osv.dev/vulnerability/CVE-2021-46758

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From sbomify Insights: https://insights.sbomify.com/CVE-2021-46758/
Summaries are generated and may contain mistakes; the official description above is the record.