Chipmaker AMD has issued guidance for two new attacks against its SEV (Secure Encrypted Virtualization) protection technology. The two attacks can allow threat actors to inject arbitrary code into the virtual machine even if the protection mechanism is in place. The vendor has provided mitigation in the SEV-SNP feature which is available for enablement in 3rd Gen AMD EPYC processors. Customers could mitigate the attacks by enabling SEV, which is only supported on 3rd Generation AMD EPY processors.”]
Source: https://securityaffairs.co/wordpress/117981/security/amd-sev-attacks.html