"AMD Issues Updates for Silicon-Level 'SinkClose' Processor Flaw"
"AMD Issues Updates for Silicon-Level 'SinkClose' Processor Flaw"
AMD has issued firmware updates to address a nearly two-decade-old silicon-level vulnerability called "SinkClose" in its EPYC data center processors and Ryzen line of processors for PCs and embedded systems. The flaw impacts a processor component that protects System Management Mode (SMM), an execution mode more privileged than kernel-level mode. According to the IOActive researchers who discovered the privilege escalation vulnerability, it is an "unpatchable" issue. If exploited, it enables an attacker to install malware on a system that would be nearly impossible to remove.