[FFmpeg-devel] [PATCH 2/3] avcodec/apac: reset buffer on error

[Paul B Mahol]

On 11/17/22, Michael Niedermayer <michael at niedermayer.cc> wrote:
> Fixes: repeatly parsing the same data after each 1 byte packet
> Fixes: Timeout
> Fixes:
> 51943/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_APAC_fuzzer-5779018251370496
>

LGTM

> 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/apac.c | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/libavcodec/apac.c b/libavcodec/apac.c
> index 6a1f61b842..e9f6a0dd88 100644
> --- a/libavcodec/apac.c
> +++ b/libavcodec/apac.c
> @@ -191,6 +191,8 @@ static int apac_decode(AVCodecContext *avctx, AVFrame
> *frame,
>              if (c->bit_length < 0 ||
>                  c->bit_length > 17) {
>                  c->bit_length = avctx->bits_per_coded_sample;
> +                s->bitstream_index = 0;
> +                s->bitstream_size  = 0;
>                  return AVERROR_INVALIDDATA;
>              }
>
> --
> 2.17.1
>
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