[FFmpeg-devel] [PATCH 2/5] avcodec/vc1: Fix overflow in aspect?ratio calculation

Michael Niedermayer michael at niedermayer.cc
Thu Aug 15 10:54:24 EEST 2019


On Tue, Aug 13, 2019 at 10:56:03AM +0200, Jean-Baptiste Kempf wrote:
> Are those values even acceptable according to spec?

Which spec ?
SMPTE 421M ?
no, i think not

wmv3image (which is what the fuzzer tested)
iam not sure if we have a spec about it.


> Shouldn't 16k*16K be the maximum allowed?

I can add a test, ask for a sample and fail instead.
I guess being more restrictive on this here is a good thing
so ill post a new patch with that

Thanks

[...]

-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

it is not once nor twice but times without number that the same ideas make
their appearance in the world. -- Aristotle
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