From: Eric Blake <eblake@redhat.com>
To: Programmingkid <programmingkidx@gmail.com>,
Max Reitz <mreitz@redhat.com>
Cc: Peter Maydell <peter.maydell@linaro.org>,
qemu-devel qemu-devel <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] Mount image file feature
Date: Sat, 29 Aug 2015 17:12:01 -0600 [thread overview]
Message-ID: <55E23C41.2010706@redhat.com> (raw)
In-Reply-To: <26E35BCA-84A1-4622-B603-209B1A527125@gmail.com>
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On 08/29/2015 02:18 PM, Programmingkid wrote:
>>
>> (1) 'change' always uses 'raw' as the format, but the selector
>> apparently offers you the full range of image formats
>> (supportedImageFileTypes).
>
> So far it has worked out just fine. Doesn't QEMU detect the format itself?
You DON'T want to rely on qemu detecting the format itself. That is a
CVE waiting to happen. If you hand a raw disk to the guest, and the
guest writes particular metadata to resemble some other format, and then
qemu probes that other format, you have allowed the guest to take over
the host.
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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next prev parent reply other threads:[~2015-08-29 23:12 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-27 1:05 [Qemu-devel] Mount image file feature G 3
2015-08-29 15:40 ` Max Reitz
2015-08-29 15:57 ` Programmingkid
2015-08-29 16:39 ` Max Reitz
2015-08-29 17:36 ` Programmingkid
2015-08-29 18:01 ` Max Reitz
2015-08-29 18:34 ` MagicCat Software
2015-08-29 19:34 ` Max Reitz
2015-08-29 20:06 ` Programmingkid
2015-08-29 23:10 ` Eric Blake
2015-08-30 0:02 ` Programmingkid
2015-08-30 7:15 ` Paolo Bonzini
2015-08-29 19:52 ` Max Reitz
2015-08-29 20:18 ` Programmingkid
2015-08-29 23:12 ` Eric Blake [this message]
2015-08-29 23:31 ` Programmingkid
2015-08-29 23:04 ` Eric Blake
2015-08-30 0:03 ` MagicCat Software
2015-08-31 8:02 ` Markus Armbruster
2015-08-30 6:47 ` Paolo Bonzini
2015-08-31 3:47 ` Programmingkid
2015-08-31 7:52 ` Markus Armbruster
2015-08-31 13:12 ` Programmingkid
2015-08-31 16:26 ` Markus Armbruster
2015-08-31 18:29 ` Programmingkid
2015-08-30 6:42 ` Paolo Bonzini
2015-08-31 20:13 ` Programmingkid
2015-08-31 20:26 ` Max Reitz
2015-08-31 20:33 ` Programmingkid
2015-09-02 14:31 ` Max Reitz
2015-09-02 14:38 ` Programmingkid
2015-09-03 9:46 ` Markus Armbruster
2015-09-03 14:24 ` Programmingkid
2015-09-03 16:26 ` Markus Armbruster
2015-09-03 16:51 ` Programmingkid
2015-09-03 9:34 ` Markus Armbruster
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