[FFmpeg-devel] [PATCH] avcodec/diracdec: Fix qfactor/offset tables

[Michael Niedermayer]

On Wed, Jan 13, 2016 at 11:51:47PM +0100, Michael Niedermayer wrote:
> From: Michael Niedermayer <michael at niedermayer.cc>
> 
> It seems the previous tables where calculated with 32bit integers ignoring
> overflows.
> Also check for the max qindex, the value is choosen so that the qfactor/offset
> fit in int32.
> 
> Fixes: 070b7914fd5dfe8f93248bea71363410/asan_static-oob_c8d034_2764_258e20f4a3c79158aecddb61a833d756.drc
> Fixes out of array reads
> 
> Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
> Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
> ---
>  libavcodec/diracdec.c |  108 ++++++++++++++++++++++++++++---------------------
>  1 file changed, 63 insertions(+), 45 deletions(-)

applied

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

In a rich man's house there is no place to spit but his face.
-- Diogenes of Sinope
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