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2002 Nov 17 12:36

The following is an archive of a post made to our 'vox mailing list' by one of its subscribers.

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[vox] [Fwd: Re: i386 Linux kernel DoS]
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[vox] [Fwd: Re: i386 Linux kernel DoS]



For those who were following the local DoS against Linux kernels in
/.-like forums but not on bugtraq, here is the latest:

On Wed, 13 Nov 2002, Christophe Devine wrote:

> > Regarding this issue: is it 80x86 or specifically 80386 designed ?
> Been trying it on AMD Duron, AMD Athlon MP, Intel i586 - just
> segfaults :(
> Yep; the first version of the DoS I posted on bugtraq was defective
> and worked only under special conditions (inside gdb for example).
> However this updated version works much better:
> At the beginning I thought only kernels <= 2.4.18 were affected; but
> it appeared that both kernels 2.4.19 and 2.4.20-rc1 are vulnerable as
> well. The flaw seems to be related to the kernel's handling of the
> nested task  (NT) flag inside a lcall7.

Reposting mail from Linus to linux-kernel mailing list.

== cut here ==



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