AMD is warning about a high-severity CPU vulnerability named SinkClose that impacts multiple generations of its EPYC, Ryzen, and Threadripper processors. The vulnerability allows attackers with Kernel-level (Ring 0) privileges to gain Ring -2 privileges and install malware that becomes nearly undetectable.
Tracked as CVE-2023-31315 and rated of high severity (CVSS score: 7.5), the flaw was discovered by IOActive Enrique Nissim and Krzysztof Okupski, who named privilege elevation attack ‘Sinkclose.’
Full details about the attack will be presented by the researchers at tomorrow in a DefCon talk titled “AMD Sinkclose: Universal Ring-2 Privilege Escalation.”
No fix planned for Ryzen 3000 is a disappointment
That is indeed weird. I don’t see a mention of summit and pinnacle ridge either, even though rome, castle peak and renoir are covered. Since this is fix is an AGESA upgrade, I’m inclined to believe it’ll cover zen 2 on any platform.
I’ll reach out for clarification. I have a Matisse X production system running and there’s no way I’m leaving this be.
How it that conceivable?
Not that it changes anything, but it might be worth to voice our concerns
I found this thread on their forum:
Yeah it really is, but a bit of a nudge to find a decent price on a 5600x.
They’re issuing a fix for the 5000 series but not the 3000 series. As a 3000 series owner and with Intel cumming in customer’s eyes my next computer will be RISC-V Death to x86.
