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More of AMD's Secure Encrypted Virtualization Secure Nested Paging (SEV-SNP) support for memory encrypted VMs is set to make it upstream for the Linux 6.9 kernel coming out toward the middle of the year.
AMD Secure Encrypted Virtualization (SEV) and Intel Trust Domain Extensions (TDX) are intended to help provide better security for virtual machines and are key elements to both companies investments around confidential computing
The partnership with Intel allows for hardware-enforced security and confidentiality on 4th Gen Xeon processors.
Threat actors could compromise encrypted virtual machines and facilitate privilege escalation efforts through the new CacheWarp attack involving the exploitation of a vulnerability impacting AMD's Secure Encrypted Virtualization technology, tracked as CVE-2023-20592, according to The Hacker News.
CacheWarp is a new attack method affecting a security feature present in AMD processors that can pose a risk to virtual machines.