Insufficient Bounds Checking in AMD Trusted Execution Environment
CVE-2021-26383

7.9HIGH

Key Information:

Vendor

Amd
Status
Amd Ryzen™ 5000 Series Mobile Processors With Radeon™ Graphics
Amd Ryzen™ 4000 Series Desktop Processors
Amd Ryzen™ 7030 Series Mobile Processors With Radeon™ Graphics
Amd Ryzen™ 5000 Series Desktop Processors With Radeon™ Graphics
Vendor
CVE Published:
5 September 2025

What is CVE-2021-26383?

The vulnerability in AMD's Trusted Execution Environment stems from insufficient bounds checking, enabling attackers with compromised userspace access to execute commands with malformed arguments. This can lead to out-of-bounds memory accesses, posing risks to both the integrity and availability of the affected systems.

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Deploy the Patch

Affected Version(s)

AMD Instinct™ MI210 ROCm 6.4

AMD Instinct™ MI250 ROCm 6.4

AMD Radeon™ PRO V520 Graphics Products Contact your AMD Customer Engineering representative

References

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

CVSS V3.1

Score:
7.9
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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