linux-kernel - /sys/devices/system/cpu/vulnerabilities/ doesn't show all known CPU vulnerabilities

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Message-ID: <20190813232829.3a1962cc@localhost>
Date:   Tue, 13 Aug 2019 23:28:29 +0300
From:   Kernel User <linux-kernel@...eup.net>
To:     linux-kernel@...r.kernel.org
Cc:     mhocko@...e.com, x86@...nel.org
Subject: /sys/devices/system/cpu/vulnerabilities/ doesn't show all known CPU
 vulnerabilities

Hi,

'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:

https://en.wikipedia.org/wiki/Meltdown_(security_vulnerability)#Speculative_execution_security_vulnerabilities

It would be good to have a full list with statuses. Then one won't need to use external (potentially non-safe) tools like https://github.com/speed47/spectre-meltdown-checker 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:

http://bugzilla.suse.com/show_bug.cgi?id=1145191