A KVM guest using SEV-ES (Secure Encrypted Virtualization - Encrypted State) can trigger out-of-bounds reads and writes in the host kernel via a malicious VMGEXIT using the exit reason SVM_EXIT_IOIO.
A KVM guest using SEV-ES (Secure Encrypted Virtualization - Encrypted State) can trigger out-of-bounds reads and writes in the host kernel via a malicious VMGEXIT using the exit reason SVM_EXIT_IOIO.