A new security vulnerability has been found that only affects Intel CPUs – AMD users need not concern regarding this issue. Dubbed Spoiler, the newfound security vulnerability was discovered by the Worcester Polytechnic Institute in partnership with the University of Lübeck, and affects all Intel CPUs since the introduction of their Core architecture. This vulnerability too affects Intel’s speculative execution design, and according to the researchers, works independent of OS, virtual machine, or sandboxed environments.
As the researchers explain, Intel’s speculative execution of certain memory workloads requires the full physical address bits for the information in memory to be known, which could allow for the full address to be available in user space – allowing for privilege escalation and other microarchitectural attacks. According to the researchers, a software solution to this problem is impossible, which means this is yet another silicon-level bug that needs to be addressed in future processor designs.