From: David Miller <davem@davemloft.net>
To: jasowang@redhat.com
Cc: mst@redhat.com, kvm@vger.kernel.org,
virtualization@lists.linux-foundation.org,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
jpoimboe@redhat.com, aarcange@redhat.com
Subject: Re: [PATCH net] vhost: Fix Spectre V1 vulnerability
Date: Wed, 31 Oct 2018 12:39:53 -0700 (PDT) [thread overview]
Message-ID: <20181031.123953.2258610601885351617.davem@davemloft.net> (raw)
In-Reply-To: <20181030061049.7424-1-jasowang@redhat.com>
From: Jason Wang <jasowang@redhat.com>
Date: Tue, 30 Oct 2018 14:10:49 +0800
> The idx in vhost_vring_ioctl() was controlled by userspace, hence a
> potential exploitation of the Spectre variant 1 vulnerability.
>
> Fixing this by sanitizing idx before using it to index d->vqs.
>
> Cc: Michael S. Tsirkin <mst@redhat.com>
> Cc: Josh Poimboeuf <jpoimboe@redhat.com>
> Cc: Andrea Arcangeli <aarcange@redhat.com>
> Signed-off-by: Jason Wang <jasowang@redhat.com>
Applied and queued up for -stable.
prev parent reply other threads:[~2018-10-31 19:39 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-30 6:10 Jason Wang
2018-10-31 19:39 ` David Miller [this message]
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