Intel isn't afraid of new Spectre vulnerabilities, but researchers say they should be techspot.com | 5 may, 2021 Intel believes that their processors are secure enough as it is A few days ago, a report was published detailing three novel Spectre vulnerabilities that exist inside the micro-op cache of all modern processors. Shortly after we wrote about it, Intel reached out to say that they don’t think the new vulnerabilities are a big problem. Their official statement reads: "Intel reviewed the report and informed researchers that existing mitigations were not being bypassed and that this scenario is addressed in our secure coding guidance. Software following our guidance already have protections against incidental channels including the uop cache incidental channel. No new mitigations or guidance are needed." Intel refutes claim that newly-uncovered Spectre vulnerability variants need patching with performance-leeching fixes Have anyone seen a responce from AMD on the latest Spectre vulnerabilities? A new Spectre vulnerability is costly to patch but nearly impossible to exploit techspot.com | 5 may, 2021 Will Spectre haunt CPUs forever? TL;DR: Researchers from the University of Virginia and the University of California, San Diego discovered three Spectre vulnerabilities in AMD and Intel processors during their study of the micro-op cache. The vulnerabilities bypass existing Spectre mitigations, and the researchers predict that their proposed low-level fixes would incur an expensive performance penalty. However, they acknowledge that exploiting these might prove too difficult to justify harsh mitigations. The three newly discovered vulnerabilities are in the design of the micro-op cache, a feature of modern CPUs present in AMD processors from 2017 onwards and Intel CPUs from 2011 onwards. The micro-op cache improves a processor’s performance by storing low-level instructions that are spawned as the processor breaks complex instructions down into computable arithmetic. It hasn’t been the subject of much investigative research, until now, because AMD and Intel document their micro-op cache designs poorly to conceal their proprietary designs.