Re: [Xen-devel] [PATCH] fs: pipe.c null pointer dereference - CVE-2009-3547

[Keir Fraser <keir@xxxxxxx>]

On 22/11/2010 16:27, "Shaun Reitan" <mailinglists@xxxxxxxxxxxxxxxx> wrote:

> We've been applying this patch since the fix was discovered but i just
> realized yesterday when building a new kernel that the Xen kernel does
> not have this fix applied yet.
> 
> I also have verified that this exploit works to gain root access on the
> current http://xenbits.xensource.com/linux-2.6.18-xen.hg branch

It has to be said, very clearly, that our 2.6.18 tree is only really of use
now as a repository of Xen patches for vendors to pull into their own,
*properly maintained and secured* kernels. We are very interested in fixing
Xen-related security issues in our 2.6.18 tree (precisely because others use
it as a repository of good Xen patches). We are less interested in general
kernel fixes, although of course as a matter of good form we will consider a
security fix such as you propose. However, the patch you supplied does not
apply to the 2.6.18 tree.

 Thanks,
 Keir



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