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Computer science User space Cache Kernel (algebra) Operating system Register file Parallel computing Transient (computer programming) Embedded system Instruction set Combinatorics Mathematics

Michael Schwarz , Moritz Lipp , Daniel Moghimi , Jo Van Bulck , Julian Stecklina , Thomas Prescher , Daniel Gruss ·

YOU? · · 2019 · Open Access · · DOI: https://doi.org/10.1145/3319535.3354252 · OA: W2976763854

In early 2018, Meltdown first showed how to read arbitrary kernel memory from user space by exploiting side-effects from transient instructions. While this attack has been mitigated through stronger isolation boundaries between user and kernel space, Meltdown inspired an entirely new class of fault-driven transient-execution attacks. Particularly, over the past year, Meltdown-type attacks have been extended to not only leak data from the L1 cache but also from various other microarchitectural structures, including the FPU register file and store buffer.