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Re: Is Debian Linux protected against the Meltdown and Spectre security flaws?

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On Mon, Feb 19, 2018 at 05:24:18PM +0000, Michael Fothergill wrote:
> On 19 February 2018 at 17:03, Reco <recoverym4n@gmail.com> wrote:
> 
> >         Hi.
> >
> > On Mon, Feb 19, 2018 at 04:40:19PM +0000, Michael Fothergill wrote:
> > > I had thought up to now that e.g. kernel 4.15.4-1 was new enough that if
> > > you compiled it with gcc 7.3 then the spectre fix would then work.
> >
> > Not unless you apply the retpoline patch to the gcc.
> >
> > For instance, just today said patch was applied to the Debian stable
> > version of gcc, gcc-4.9:
> >
> > https://www.debian.org/security/2018/dsa-4117
> >
> > Reco
> >
> > Doesn't that mean that if you installed this version of gcc 4.9 and one
> of the most recent kernels debian has e.g. 4.15.4-1 above
> then it will be able to correct install the microcode or whatever it is
> called and you don't need a compiler as new as gcc 7.3?
> 
> If so that is excellent news indeed.

I'm unsure of linux-4.15, but it should be possible to use patched
gcc-4.9 to build backported linux-4.14+89. Whenever they applied the
second part of retpoline patch to this kernel remains to seen.

Being lazy I'll just wait while Debian Kernel Team builds a patched
kernel for all of us.

Reco

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Thread

Is Debian Linux protected against the Meltdown and Spectre security flaws? Turritopsis Dohrnii Teo En Ming <tdteoenming@gmail.com> - 2018-02-19 14:20 +0100
  Re: Is Debian Linux protected against the Meltdown and Spectre  security flaws? Michael Fothergill <michael.fothergill@gmail.com> - 2018-02-19 14:40 +0100
    Re: Is Debian Linux protected against the Meltdown and Spectre  security flaws? Roberto C. Sánchez <roberto@debian.org> - 2018-02-19 15:30 +0100
    Re: Is Debian Linux protected against the Meltdown and Spectre  security flaws? Andy Smith <andy@strugglers.net> - 2018-02-20 06:00 +0100
      Re: Is Debian Linux protected against the Meltdown and Spectre  security flaws? Greg Wooledge <wooledg@eeg.ccf.org> - 2018-02-20 14:50 +0100
  Re: Is Debian Linux protected against the Meltdown and Spectre  security flaws? Greg Wooledge <wooledg@eeg.ccf.org> - 2018-02-19 15:20 +0100
    Re: Is Debian Linux protected against the Meltdown and Spectre  security flaws? Michael Fothergill <michael.fothergill@gmail.com> - 2018-02-19 18:00 +0100
      Re: Is Debian Linux protected against the Meltdown and Spectre  security flaws? Reco <recoverym4n@gmail.com> - 2018-02-19 18:10 +0100
        Re: Is Debian Linux protected against the Meltdown and Spectre  security flaws? Michael Fothergill <michael.fothergill@gmail.com> - 2018-02-19 18:50 +0100
          Re: Is Debian Linux protected against the Meltdown and Spectre  security flaws? Reco <recoverym4n@gmail.com> - 2018-02-19 19:10 +0100
            Re: Is Debian Linux protected against the Meltdown and Spectre  security flaws? Michael Lange <klappnase@freenet.de> - 2018-02-19 19:40 +0100
      Re: Is Debian Linux protected against the Meltdown and Spectre  security flaws? Michael Lange <klappnase@freenet.de> - 2018-02-19 19:30 +0100
        Re: Is Debian Linux protected against the Meltdown and Spectre  security flaws? Michael Fothergill <michael.fothergill@gmail.com> - 2018-02-19 20:10 +0100
          Re: Is Debian Linux protected against the Meltdown and Spectre  security flaws? Michael Lange <klappnase@freenet.de> - 2018-02-19 20:20 +0100
            Re: Is Debian Linux protected against the Meltdown and Spectre  security flaws? Michael Fothergill <michael.fothergill@gmail.com> - 2018-02-19 22:30 +0100
              Re: Is Debian Linux protected against the Meltdown and Spectre  security flaws? Andy Smith <andy@strugglers.net> - 2018-02-20 06:10 +0100
                Re: Is Debian Linux protected against the Meltdown and Spectre  security flaws? Michael Fothergill <michael.fothergill@gmail.com> - 2018-02-20 09:30 +0100
                Re: Is Debian Linux protected against the Meltdown and Spectre  security flaws? Michael Lange <klappnase@freenet.de> - 2018-02-20 11:10 +0100
                Re: Is Debian Linux protected against the Meltdown and Spectre  security flaws? Michael Fothergill <michael.fothergill@gmail.com> - 2018-02-20 16:00 +0100
                Re: Is Debian Linux protected against the Meltdown and Spectre  security flaws? Stephan Seitz <stse+debian@fsing.rootsland.net> - 2018-02-20 10:20 +0100
                Re: Is Debian Linux protected against the Meltdown and Spectre  security flaws? Andy Smith <andy@strugglers.net> - 2018-02-20 16:20 +0100
  Re: Is Debian Linux protected against the Meltdown and Spectre  security flaws? Brad Rogers <brad@fineby.me.uk> - 2018-02-19 15:20 +0100
    Re: Is Debian Linux protected against the Meltdown and Spectre  security flaws? Michael Lange <klappnase@freenet.de> - 2018-02-19 19:40 +0100
      Re: Is Debian Linux protected against the Meltdown and Spectre  security flaws? Brad Rogers <brad@fineby.me.uk> - 2018-02-19 20:20 +0100
      Re: Is Debian Linux protected against the Meltdown and Spectre security flaws? Gene Heskett <gheskett@shentel.net> - 2018-02-19 21:30 +0100
        Re: Is Debian Linux protected against the Meltdown and Spectre  security flaws? Greg Wooledge <wooledg@eeg.ccf.org> - 2018-02-19 21:50 +0100
          Re: Is Debian Linux protected against the Meltdown and Spectre  security flaws? Michael Lange <klappnase@freenet.de> - 2018-02-20 00:20 +0100
          Re: Is Debian Linux protected against the Meltdown and Spectre security flaws? Gene Heskett <gheskett@shentel.net> - 2018-02-20 00:30 +0100
    Re: Is Debian Linux protected against the Meltdown and Spectre  security flaws? Vincent Lefevre <vincent@vinc17.net> - 2018-02-27 17:10 +0100

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