From: David Vrabel <david.vrabel@citrix.com>
To: Jan Beulich <JBeulich@suse.com>,
David Vrabel <david.vrabel@citrix.com>,
Boris Ostrovsky <boris.ostrovsky@oracle.com>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: xen-devel <xen-devel@lists.xenproject.org>,
<linux-kernel@vger.kernel.org>
Subject: Re: [Xen-devel] [PATCH 1/2] xen-pciback: limit guest control of command register
Date: Wed, 11 Mar 2015 14:36:04 +0000 [thread overview]
Message-ID: <550052D4.8070208@citrix.com> (raw)
In-Reply-To: <5500566502000078000688D7@mail.emea.novell.com>
On 11/03/15 13:51, Jan Beulich wrote:
> Otherwise the guest can abuse that control to cause e.g. PCIe
> Unsupported Request responses (by disabling memory and/or I/O decoding
> and subsequently causing [CPU side] accesses to the respective address
> ranges), which (depending on system configuration) may be fatal to the
> host.
>
> Note that to alter any of the bits collected together as
> PCI_COMMAND_GUEST permissive mode is now required to be enabled
> globally or on the specific device.
>
> This is CVE-2015-2150 / XSA-120.
Applied to stable/for-linus-4.0 and tagged for stable, thanks.
David
next prev parent reply other threads:[~2015-03-11 14:36 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-11 13:51 [PATCH 1/2] xen-pciback: limit guest control of command register Jan Beulich
2015-03-11 14:36 ` David Vrabel [this message]
2015-03-11 14:36 ` David Vrabel
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