Local memory corruption via malformed XGMI TA argument
Published Feb 12, 2026 · Updated Feb 12, 2026
Type confusion in AMD graphics products allows local users to corrupt memory through a malformed argument sent to the XGMI TA. The AMD Secure Processor interprets the External Global Memory Interconnect Trusted Agent argument as an incompatible type, violating memory safety. Local access is required; AMD has not disclosed whether the violation reads, writes, or crashes memory, so consequences remain bounded to confidentiality, integrity, and availability loss.
Summary
What happened
Type confusion in AMD graphics products allows local users to corrupt memory through a malformed argument sent to the XGMI TA. The AMD Secure Processor interprets the External Global Memory Interconnect Trusted Agent argument as an incompatible type, violating memory safety. Local access is required; AMD has not disclosed whether the violation reads, writes, or crashes memory, so consequences remain bounded to confidentiality, integrity, and availability loss.
The record
- CVE
- CVE-2023-31323
- Published
- Feb 12, 2026
- Updated
- Feb 12, 2026
- Vendor
- Advanced Micro Devices, Inc.
- Product
- AMD Instinct™ MI250
- Classifications
- CWE-843
- Attack vector
- local
- Privileges
- Unavailable
Timeline
How it unfolded
- Feb 12, 2026CVE publishedPublication date reported by the CVE source.
- Feb 12, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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