Re: kernel memory allocation bug in 2.6.27.32-2.6.27.41 kvm section

[Greg KH <greg@kroah.com>]

On Sun, Dec 27, 2009 at 12:13:00PM +0200, Avi Kivity wrote:
> On 12/17/2009 05:35 PM, Oscon wrote:
> > Hello!
> >
> > I can't register new account in bugzilla.kernel.org. / my ISP's spamfilter
> > problem (?) maybe./
> >
> > --------------------------
> >
> > I sent this mail to Greg KH (2.6.27.y maintainer), he sent me:
> >
> > "Can you get the kvm maintainers to agree that this is correct?
> >
> > thanks,
> >
> > greg k-h"
> >
> > ---------------
> > So the bug :
> >
> > I found a memory allocation bug in kvm/mmu.c&  kvm_main.c. /in
> > kvm_destroy_vm()/
> >
> > Affected kernel: 2.6.27.32-2.6.27.41
> >
> > Mainline kernel (2.6.32) is not affected. (Modified kvm subsystem.)
> >
> > Cause:
> > http://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Fstable%2Flinux-2.6.27.y.git;a=commitdiff_plain;h=d2127c8300fb1ec54af56faee17170e7a525326d
> >
> > Solution: Revert this patch.
> >
> > This bug can cause local DoS in the host system.
> >
> >    
> 
> 
> Looks like some other patch is missing in 2.6.27.y.  Not sure what it is.
> 
> But it's safer to revert this patch for now.

Ok, I've now reverted it.

thanks,

greg k-h