[FFmpeg-devel] [PATCH 1/2] avcodec/pgssubdec: Free subtitle on error

Paul B Mahol onemda at gmail.com
Sun Jan 5 09:44:50 EET 2020


lgtm

On 1/5/20, Michael Niedermayer <michael at niedermayer.cc> wrote:
> Fixes: Assertion failure
> Fixes:
> 19753/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_PGSSUB_fuzzer-5688461843759104
>
> 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/pgssubdec.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/libavcodec/pgssubdec.c b/libavcodec/pgssubdec.c
> index 8c10f6d573..7fadcb8b4b 100644
> --- a/libavcodec/pgssubdec.c
> +++ b/libavcodec/pgssubdec.c
> @@ -691,8 +691,11 @@ static int decode(AVCodecContext *avctx, void *data,
> int *data_size,
>              ret = AVERROR_INVALIDDATA;
>              break;
>          }
> -        if (ret < 0 && (avctx->err_recognition & AV_EF_EXPLODE))
> +        if (ret < 0 && (avctx->err_recognition & AV_EF_EXPLODE)) {
> +            avsubtitle_free(data);
> +            *data_size = 0;
>              return ret;
> +        }
>
>          buf += segment_length;
>      }
> --
> 2.24.0
>
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