Misconfiguration of TMRs May Lead to Loss of Integrity and Availability

CVE-2021-26367

Summary

A security vulnerability exists in certain AMD processors wherein a malicious actor can exploit misconfigurations of Trusted Memory Regions (TMRs). This exploitation allows the attacker to define arbitrary address ranges for TMRs, which could lead to significant challenges concerning the integrity and availability of the system. It is essential for users of affected AMD products to be aware of this issue and to apply the available security updates provided by the vendor to mitigate risks.

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