[FFmpeg-devel] [PATCH 1/3] avcodec/apedec: Only clear the needed buffer space, instead of all

[Paul B Mahol]

probably ok

On 10/28/19, Michael Niedermayer <michael at niedermayer.cc> wrote:
> Fixes: Timeout (15sec -> 0.4sec)
> Fixes:
> 18396/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_APE_fuzzer-5730080487112704
>
> 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/apedec.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/libavcodec/apedec.c b/libavcodec/apedec.c
> index 75c6a96437..2dd197a7f2 100644
> --- a/libavcodec/apedec.c
> +++ b/libavcodec/apedec.c
> @@ -1516,7 +1516,7 @@ static int ape_decode_frame(AVCodecContext *avctx,
> void *data,
>      av_fast_malloc(&s->decoded_buffer, &s->decoded_size,
> decoded_buffer_size);
>      if (!s->decoded_buffer)
>          return AVERROR(ENOMEM);
> -    memset(s->decoded_buffer, 0, s->decoded_size);
> +    memset(s->decoded_buffer, 0, decoded_buffer_size);
>      s->decoded[0] = s->decoded_buffer;
>      s->decoded[1] = s->decoded_buffer + FFALIGN(blockstodecode, 8);
>
> --
> 2.23.0
>
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