linux-kernel - Re: [PATCH 5.12.y] KVM: nSVM: avoid picking up unsupported bits from L2 in int

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Message-ID: <74cf96a9030dc0e996b1814bbf907299e377053e.camel@redhat.com>
Date:   Mon, 16 Aug 2021 18:37:20 +0300
From:   Maxim Levitsky <mlevitsk@...hat.com>
To:     Greg KH <gregkh@...uxfoundation.org>,
        Paolo Bonzini <pbonzini@...hat.com>
Cc:     linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
        stable@...r.kernel.org
Subject: Re: [PATCH 5.12.y] KVM: nSVM: avoid picking up unsupported bits
 from L2 in int_ctl (CVE-2021-3653)

On Mon, 2021-08-16 at 17:11 +0200, Greg KH wrote:
> On Mon, Aug 16, 2021 at 05:04:58PM +0200, Paolo Bonzini wrote:
> > On 16/08/21 16:25, Greg KH wrote:
> > > > [ upstream commit 0f923e07124df069ba68d8bb12324398f4b6b709 ]
> > > 
> > > And 5.12.y is long end-of-life, take a look at the front page of
> > > kernel.org for the active kernels.
> > 
> > Ok, sorry I didn't notice that... it wasn't end of life when the issue was
> > discovered. O:)
> > 
> > (Damn, the one time that we prepare all the backports in advance, we end up
> > doing too many of them!)
> 
> You didn't do a 5.13.y version :(
> 
> Will the 5.12.y patches work for that tree?

5.13 will more likely to work with the upstream version.
I'll check it soon.

Best regards,
	Maxim Levitsky

> 
> thanks,
> 
> greg k-h
>