Improper System Call Parameter Validation in Trusted OS by AMD
CVE-2021-26381

7.1HIGH

Key Information:

Vendor

Amd
Status
Amd Ryzen™ Threadripper™ Pro 3000 Wx-series Processors
Amd Ryzen™ 5000 Series Desktop Processors With Radeon™ Graphics
Amd Ryzen™ Threadripper™ Pro 5000 Wx-series Processors
Amd Athlon™ 3000 Series Mobile Processors With Radeon™ Graphics
Vendor
CVE Published:
10 February 2026

What is CVE-2021-26381?

A weakness in AMD's Trusted OS allows for improper validation of system call parameters. This flaw may permit a malicious driver to manipulate large-scale mapping or unmapping operations, which could lead to potential kernel memory corruption, jeopardizing the stability and security of the operating environment.

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Deploy the Patch

Affected Version(s)

AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics PicassoPI-FP5 1.0.0.E

AMD Radeon™ PRO V520 Contact Your AMD Customer Engineering Represenatative

AMD Radeon™ PRO V620 Contact Your AMD Customer Engineering Represenatative

References

https://www.amd.com/en/resources/product-security/bulleti...
https://www.amd.com/en/resources/product-security/bulleti...

CVSS V4

Score:
7.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
High
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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