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Systems with microprocessors utilizing speculative execution may allow unauthorized disclosure of information to an attacker with local user access via a side-channel attack on the directional branch predictor, as demonstrated by a pattern history table (PHT), aka BranchScope.
Use CWE-200, Intel vendor hub and Atom C product page to widen CVE-2018-9056 into its surrounding weakness, vendor, and product context.
Compare it with CVE-2018-3652, CVE-2018-3693 and CVE-2018-3640 for nearby disclosures in the same product family.