Another day, another #RIDL embargo and addendum! “New” (not really!) variants of the day: L1D evictions (Fig 6, RIDL paper) or #L1DES and vector registers or #VRS. See http://mdsattacks.com . As a bonus: a faster RIDL exploit that leaks a root hash in 4s:https://www.youtube.com/watch?v=4DQAcCfg3b8 …
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But why don't you squeeze out a couple more LPU papers?



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#RIDL is enough. (And enough drama to last a lifetime.)
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What makes these considered as new vulns is that current microcode MD_CLEAR implementation don't flush the micro-arch buffers that may theoretically propagate to MDS-leakable buffers post executing MD_CLEAR. Thus, mitigation requires microcode update but no software change.
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