‘Sinkclose’ Flaw in Hundreds of Millions of AMD Chips Allows Deep, Virtually Unfixable Infections

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Wired 13h ago

‘Sinkclose’ Flaw in Hundreds of Millions of AMD Chips Allows Deep, Virtually Unfixable Infections - Wired

Quick Summary:

Researchers warn that a bug in AMD’s chips would allow attackers to root into some of the most privileged portions of a computer—and that it has persisted in the company’s processors for decades.

For users seeking to protect themselves, Nissim and Okupski say that for Windows machines—likely the vast majority of affected systems—they expect patches for Sinkclose to be integrated into updates shared by computer makers with Microsoft, who will roll them into future operating system updates.

They found the critical TClose edge case that enabled Sinkclose, they say, just by reading and rereading AMD's documentation.“I think I read the page where the vulnerability was about a thousand times,” says Nissim.“And then on one thousand and one, I noticed it.” They alerted AMD to the flaw in October of last year, they say, but have waited nearly 10 months to give AMD more time to prepare a fix.