CVE-2021-46750
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-09-06

Last updated on: 2025-09-08

Assigner: Advanced Micro Devices Inc.

Description
Failure to validate the address and size in TEE (Trusted Execution Environment) may allow a malicious x86 attacker to send malformed messages to the graphics mailbox resulting in an overlap of a TMR (Trusted Memory Region) that was previously allocated by the ASP bootloader leading to a potential loss of integrity.
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Meta Information
Published
2025-09-06
Last Modified
2025-09-08
Generated
2026-06-16
AI Q&A
2025-09-06
EPSS Evaluated
2026-06-15
NVD
CVE-2021-46750
EUVD
EUVD-2021-33406
Affected Vendors & Products
Showing 8 associated CPEs
Vendor Product Version / Range
amd radeon_pro_w7000 *
amd ryzen_threadripper 3000
amd software_pro_edition 24.q1
amd athlon 3000
amd ryzen 5000
amd ryzen 7000
amd ryzen 8000
amd embedded_processor *
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-190 The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
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Executive Summary

This vulnerability occurs because the Trusted Execution Environment (TEE) fails to properly validate the address and size parameters. A malicious x86 attacker can exploit this by sending malformed messages to the graphics mailbox, causing an overlap of a Trusted Memory Region (TMR) that was previously allocated by the ASP bootloader. This overlap can lead to a potential loss of integrity in the system.

Impact Analysis

The impact of this vulnerability is a potential loss of integrity within the Trusted Execution Environment. An attacker exploiting this flaw could cause memory regions to overlap improperly, which might allow unauthorized modification or corruption of sensitive data or code within the TEE.

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