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Subject/sys/devices/system/cpu/vulnerabilities/ doesn't show all known CPU vulnerabilities

'ls /sys/devices/system/cpu/vulnerabilities/' doesn't show all known
CPU vulnerabilities and their variants. Only some of them:

l1tf mds meltdown spec_store_bypass spectre_v1 spectre_v2

Wikipedia shows more variants:

It would be good to have a full list with statuses. Then one won't need to use external (potentially non-safe) tools like to find out the vulnerabilities of a system.

This started as a feature request on openSUSE's bugzilla where it was
suggested to report it here:

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