AMD Radeon RX 5000 Graphics Products External Global Memory Interconnect Trusted Agent type confusion

Summaryinfo

A vulnerability described as critical has been identified in AMD Radeon RX 5000 Graphics Products, Radeon PRO W5000 Graphics Products, Radeon VII, Radeon PRO VII, Instinct MI250, Instinct MI300A, Instinct MI210 and Instinct MI300X. Impacted is an unknown function of the component External Global Memory Interconnect Trusted Agent. Such manipulation leads to type confusion. This vulnerability is uniquely identified as CVE-2023-31323. Local access is required to approach this attack. No exploit exists.

Detailsinfo

A vulnerability was found in AMD Radeon RX 5000 Graphics Products, Radeon PRO W5000 Graphics Products, Radeon VII, Radeon PRO VII, Instinct MI250, Instinct MI300A, Instinct MI210 and Instinct MI300X and classified as critical. Affected by this issue is an unknown code block of the component External Global Memory Interconnect Trusted Agent. The manipulation with an unknown input leads to a type confusion vulnerability. Using CWE to declare the problem leads to CWE-843. The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Type confusion in the AMD Secure Processor (ASP) could allow an attacker to pass a malformed argument to the External Global Memory Interconnect Trusted Agent (XGMI TA) leading to a memory safety violation potentially resulting in loss of confidentiality, integrity, or availability.

The advisory is shared for download at amd.com. This vulnerability is handled as CVE-2023-31323 since 04/27/2023. The exploitation is known to be easy. The attack needs to be approached locally. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 02/12/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• AMD

Name

• Instinct MI210
• Instinct MI250
• Instinct MI300A
• Instinct MI300X
• Radeon PRO VII
• Radeon PRO W5000 Graphics Products
• Radeon RX 5000 Graphics Products
• Radeon VII

License

• commercial

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