[FFmpeg-devel] [PATCH 2/2] avcodec/hevc_cabac: Check prefix so as to avoid invalid shifts in coeff_abs_level_remaining_decode()

[Michael Niedermayer]

On Tue, Jan 16, 2018 at 12:37:28AM +0100, Michael Niedermayer wrote:
> I suspect that this can be limited tighter, but i failed to find anything
> in the spec that would confirm that.
> 
> Fixes: 4833/clusterfuzz-testcase-minimized-5302840101699584
> Fixes: runtime error: left shift of 134217730 by 4 places cannot be represented in type 'int'
> 
> Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
> Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
> ---
>  libavcodec/hevc_cabac.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

will apply this in a few days unless someone wants me to wait

[...]

-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Many that live deserve death. And some that die deserve life. Can you give
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even the very wise cannot see all ends. -- Gandalf
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