A shell script to tell if your system is vulnerable against the several
"speculative execution" CVEs that were made public since 2018.

* CVE-2017-5753 [bounds check bypass] aka 'Spectre Variant 1'
* CVE-2017-5715 [branch target injection] aka 'Spectre Variant 2'
* CVE-2017-5754 [rogue data cache load] aka 'Meltdown' aka 'Variant 3'
* CVE-2018-3640 [rogue system register read] aka 'Variant 3a'
* CVE-2018-3639 [speculative store bypass] aka 'Variant 4'
* CVE-2018-3615 [L1 terminal fault] aka 'Foreshadow (SGX)'
* CVE-2018-3620 [L1 terminal fault] aka 'Foreshadow-NG (OS)'
* CVE-2018-3646 [L1 terminal fault] aka 'Foreshadow-NG (VMM)'
* CVE-2018-12126 [microarchitectural store buffer data sampling (MSBDS)] aka
  'Fallout'
* CVE-2018-12130 [microarchitectural fill buffer data sampling (MFBDS)] aka
  'ZombieLoad'
* CVE-2018-12127 [microarchitectural load port data sampling (MLPDS)] aka 'RIDL'
* CVE-2019-11091 [microarchitectural data sampling uncacheable memory (MDSUM)]
  aka 'RIDL'
* CVE-2019-11135 [TSX asynchronous abort] aka 'TAA' aka 'ZombieLoad V2'
* CVE-2018-12207 [machine check exception on page size changes (MCEPSC)] aka 'No
  eXcuses' aka 'iTLB Multihit'
* CVE-2020-0543 [Special Register Buffer Data Sampling (SRBDS)]