[FFmpeg-devel] [PATCH] avcodec/nvenc: fix NULL pointer dereference

[Steven Liu]

Zhao Zhili <quinkblack at foxmail.com> 于2023年2月28日周二 18:44写道：
>
> From: Zhao Zhili <zhilizhao at tencent.com>
>
> This can happen if encoder init failed before setup the queue, then
> reorder_queue_flush() is called by close().
>
> Fix ticket #10221
>
> Signed-off-by: Zhao Zhili <zhilizhao at tencent.com>
> ---
>  libavcodec/nvenc.c | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/libavcodec/nvenc.c b/libavcodec/nvenc.c
> index 8a28454042..dda2dc3ba1 100644
> --- a/libavcodec/nvenc.c
> +++ b/libavcodec/nvenc.c
> @@ -178,6 +178,8 @@ static void reorder_queue_flush(AVFifo *queue)
>  {
>      FrameData fd;
>
> +    if (!queue)
> +        return;
>      while (av_fifo_read(queue, &fd, 1) >= 0)
>          av_buffer_unref(&fd.frame_opaque_ref);
>  }
> --
> 2.25.1
>
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lgtm

Thanks
Steven