On Fri, 10 Jul 2020 at 13:07, Kevin Wolf wrote:
>
> Am 10.07.2020 um 11:59 hat Peter Maydell geschrieben:
> > On Fri, 10 Jul 2020 at 10:58, Kevin Wolf wrote:
> > >
> > > Am 09.07.2020 um 16:15 hat Peter Maydell geschrieben:
> > > > dd/truncate etc won't work if the image file is not raw (eg if
>
Am 10.07.2020 um 11:59 hat Peter Maydell geschrieben:
> On Fri, 10 Jul 2020 at 10:58, Kevin Wolf wrote:
> >
> > Am 09.07.2020 um 16:15 hat Peter Maydell geschrieben:
> > > dd/truncate etc won't work if the image file is not raw (eg if
> > > it's qcow2). The only chance you have of something
On Fri, 10 Jul 2020 at 10:58, Kevin Wolf wrote:
>
> Am 09.07.2020 um 16:15 hat Peter Maydell geschrieben:
> > dd/truncate etc won't work if the image file is not raw (eg if
> > it's qcow2). The only chance you have of something that's actually
> > generic would probably involve "qemu-img resize".
Am 09.07.2020 um 16:15 hat Peter Maydell geschrieben:
> On Thu, 9 Jul 2020 at 14:56, Philippe Mathieu-Daudé wrote:
> >
> > On 7/7/20 10:29 PM, Niek Linnenbank wrote:
> > > So I manually copy & pasted the change into hw/sd/sd.c to test it.
> > > It looks like the check works, but my concern is
On Thu, 9 Jul 2020 at 17:27, Alistair Francis wrote:
>
> On Thu, Jul 9, 2020 at 7:35 AM Philippe Mathieu-Daudé wrote:
> >
> > On 7/9/20 4:15 PM, Peter Maydell wrote:
> > > The only chance you have of something that's actually
> > > generic would probably involve "qemu-img resize". But I'm a bit
On Thu, Jul 9, 2020 at 4:15 PM Peter Maydell
wrote:
> On Thu, 9 Jul 2020 at 14:56, Philippe Mathieu-Daudé
> wrote:
> >
> > On 7/7/20 10:29 PM, Niek Linnenbank wrote:
> > > So I manually copy & pasted the change into hw/sd/sd.c to test it.
> > > It looks like the check works, but my concern is
On Thu, Jul 9, 2020 at 3:56 PM Philippe Mathieu-Daudé
wrote:
> On 7/7/20 10:29 PM, Niek Linnenbank wrote:
> > Hi Philippe,
> >
> > Just tried out your patch on latest master, and I noticed I couldn't
> > apply it without getting this error:
> >
> > $ git am ~/Downloads/patches/\[PATCH\ 2_2\]\
On Thu, Jul 9, 2020 at 7:35 AM Philippe Mathieu-Daudé wrote:
>
> On 7/9/20 4:15 PM, Peter Maydell wrote:
> > On Thu, 9 Jul 2020 at 14:56, Philippe Mathieu-Daudé wrote:
> >>
> >> On 7/7/20 10:29 PM, Niek Linnenbank wrote:
> >>> So I manually copy & pasted the change into hw/sd/sd.c to test it.
>
On 7/9/20 4:15 PM, Peter Maydell wrote:
> On Thu, 9 Jul 2020 at 14:56, Philippe Mathieu-Daudé wrote:
>>
>> On 7/7/20 10:29 PM, Niek Linnenbank wrote:
>>> So I manually copy & pasted the change into hw/sd/sd.c to test it.
>>> It looks like the check works, but my concern is that with this change,
On Thu, 9 Jul 2020 at 14:56, Philippe Mathieu-Daudé wrote:
>
> On 7/7/20 10:29 PM, Niek Linnenbank wrote:
> > So I manually copy & pasted the change into hw/sd/sd.c to test it.
> > It looks like the check works, but my concern is that with this change,
> > we will be getting this error on
On 7/7/20 10:29 PM, Niek Linnenbank wrote:
> Hi Philippe,
>
> Just tried out your patch on latest master, and I noticed I couldn't
> apply it without getting this error:
>
> $ git am ~/Downloads/patches/\[PATCH\ 2_2\]\ hw_sd_sdcard\:\ Do\ not\
> allow\ invalid\ SD\ card\ sizes\ -\ Philippe\
Hi Philippe,
Just tried out your patch on latest master, and I noticed I couldn't apply
it without getting this error:
$ git am ~/Downloads/patches/\[PATCH\ 2_2\]\ hw_sd_sdcard\:\ Do\ not\
allow\ invalid\ SD\ card\ sizes\ -\ Philippe\ Mathieu-Daudé\ \<
f4...@amsat.org\>\ -\ 2020-07-07\ 1521.eml
On 7/7/20 6:06 PM, Peter Maydell wrote:
> On Tue, 7 Jul 2020 at 17:04, Alistair Francis wrote:
>>
>> On Tue, Jul 7, 2020 at 6:22 AM Philippe Mathieu-Daudé
>> wrote:
>>>
>>> QEMU allows to create SD card with unrealistic sizes. This could work,
>>> but some guests (at least Linux) consider sizes
On Tue, 7 Jul 2020 at 17:04, Alistair Francis wrote:
>
> On Tue, Jul 7, 2020 at 6:22 AM Philippe Mathieu-Daudé wrote:
> >
> > QEMU allows to create SD card with unrealistic sizes. This could work,
> > but some guests (at least Linux) consider sizes that are not a power
> > of 2 as a firmware bug
On Tue, Jul 7, 2020 at 6:22 AM Philippe Mathieu-Daudé wrote:
>
> QEMU allows to create SD card with unrealistic sizes. This could work,
> but some guests (at least Linux) consider sizes that are not a power
> of 2 as a firmware bug and fix the card size to the next power of 2.
>
> Before
QEMU allows to create SD card with unrealistic sizes. This could work,
but some guests (at least Linux) consider sizes that are not a power
of 2 as a firmware bug and fix the card size to the next power of 2.
Before CVE-2020-13253 fix, this would allow OOB read/write accesses
past the image size
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