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Re: current status of spectre/meltdown

On 2018-02-21 21:12:31, Fabian Grünbichler wrote:
> On 02/21/2018 08:40 PM, Antoine Beaupré wrote:
>> Hi,
>> Trying to do a recap here to update the wiki page correctly:
>> https://wiki.debian.org/DebianSecurity/SpectreMeltdown
>> See if you can fill in the blanks I've found...
> (Disclaimer: not involved in all of in any capacity on the Debian side
> besides testing the preview gcc packages for downstream usage, so please
> take with a grain of salt ;) I don't know any details about non-x86, so
> refraining from commenting too much on those parts)


> this got kinda long, sorry ;)

Well, that's a great response!

I've tried to summarize your responses and those of others in the thread
in the wiki, which gives us the following diff:


You'll also noticed I flipped the "yellow" color back to "green" for
Spectre v1. I'm not sure why this was yellow: I chose that color before
because I felt this was only partially mitigated, but I feel that we
have "as good as we can get" mitigation.

>From what I understand, we'd need a full audit of the complete source
code of the Debian archive (!) and, once that's done), a full rebuild
with retpoline. That is not a realistic expectation and so I simply
noted that we do not plan to do a full rebuild at this stage.

Hutchings also added per-architecture tables and more details, thanks
for that!

Hopefully we're a little better in terms of documentation. I'd still
like to see a better userland section, but I'm not sure where to

Thanks for your help!


To be naive and easily deceived is impermissible, today more than
ever, when the prevailing untruths may lead to a catastrophe because
they blind people to real dangers and real possibilities.
                        - Erich Fromm

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