I was under the assumption that it's worse than just sharing cores or servers. Even machines that do not share cores but share a common hypervisor are cross-vul

I was under the assumption that it's worse than just sharing cores or servers. Even machines that do not share cores but share a common hypervisor are cross-vulnerable. From Wikipedia [0]: Spectre has the potential of having a greater impact on cloud providers than Meltdown. Whereas Meltdown allows unauthorized applications to read from privileged memory to obtain sensitive data from processes running on the same cloud server, Spectre can allow malicious programs to induce a hypervisor to transmit the data to a guest system running on top of it. However I have also read that Spectre is confined to userspace, so I'm not sure who is correct. [0] https://en.wikipedia.org/wiki/Spectre_(security_vulnerability)#Impact https://en.wikipedia.org/wiki/Spectre_(security_vulnerabilit...