[FFmpeg-devel] [PATCH 2/2] avcodec/wavpack: Prevent frame format from being wrong

[Paul B Mahol]

lgtm

On 3/20/20, Michael Niedermayer <michael at niedermayer.cc> wrote:
> Fixes: out of array access
> Fixes:
> 21193/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WAVPACK_fuzzer-5125168956702720
>
> 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/wavpack.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/libavcodec/wavpack.c b/libavcodec/wavpack.c
> index b27262b94e..e9c870e41e 100644
> --- a/libavcodec/wavpack.c
> +++ b/libavcodec/wavpack.c
> @@ -1488,6 +1488,7 @@ static int wavpack_decode_block(AVCodecContext *avctx,
> int block_no,
>
>          /* get output buffer */
>          wc->curr_frame.f->nb_samples = s->samples;
> +        wc->curr_frame.f->format     = avctx->sample_fmt;
>          if ((ret = ff_thread_get_buffer(avctx, &wc->curr_frame,
> AV_GET_BUFFER_FLAG_REF)) < 0)
>              return ret;
>
> --
> 2.17.1
>
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