Arbitrary MSR Writes in AMD ATI Diagnostics Hardware Abstraction Utility

CVE-2019-7246

Summary

A significant vulnerability exists in the AMD ATI Diagnostics Hardware Abstraction Sys/Overclocking Utility, where the atillk64.sys driver inadequately filters Model Specific Registers (MSRs). This flaw allows an attacker to leverage the wrmsr instruction for arbitrary writes, potentially enabling unauthorized Ring-0 code execution. Such exploitation may lead to a serious escalation of privileges, impacting the integrity and security of the affected system.

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