[FFmpeg-devel] [PATCH] avcodec/avcodec: Limit the number of side data elements per packet

[Clément Bœsch]

On Thu, May 11, 2017 at 01:01:36PM +0200, Michael Niedermayer wrote:
> Fixes: 1293/clusterfuzz-testcase-minimized-6054752074858496
> 
> Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
> Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
> ---
>  libavcodec/avcodec.h  | 8 ++++++++
>  libavcodec/avpacket.c | 5 ++++-
>  2 files changed, 12 insertions(+), 1 deletion(-)
> 
> diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
> index df6d2bc748..173c083a86 100644
> --- a/libavcodec/avcodec.h
> +++ b/libavcodec/avcodec.h
> @@ -1593,6 +1593,14 @@ enum AVPacketSideDataType {
>       * AVContentLightMetadata struct.
>       */
>      AV_PKT_DATA_CONTENT_LIGHT_LEVEL,
> +
> +    /**
> +     * The number of side data elements (in fact a bit more than it).
> +     * This is not part of the public API/ABI in the sense that it may
> +     * change when new side data types are added.
> +     * This must stay the last enum value.
> +     */
> +    AV_PKT_DATA_NB,

if it's supposed to always be the last value, you can drop the trailing
comma.

-- 
Clément B.
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