[FFmpeg-devel] [PATCH] seqvideo_decode_init:check frame dimensions

[Michael Niedermayer]

On Mon, Jun 11, 2018 at 07:07:36AM +0000, Xiao Yang wrote:
> ---
>  libavcodec/tiertexseqv.c |    7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/libavcodec/tiertexseqv.c b/libavcodec/tiertexseqv.c
> index af39f74..2d0fa98 100644
> --- a/libavcodec/tiertexseqv.c
> +++ b/libavcodec/tiertexseqv.c
> @@ -222,6 +222,13 @@ static av_cold int seqvideo_decode_init(AVCodecContext *avctx)
>      if (ret < 0)
>          return ret;
>  
> +    if (!avctx->width || !avctx->height ||
> +        (avctx->width & 1) || (avctx->height & 1)) {
> +        av_log(avctx, AV_LOG_ERROR, "Invalid video dimensions: %dx%d\n",
> +               avctx->width, avctx->height);
> +        return AVERROR(EINVAL);
> +    }

this makes no sense, 4 lines above the width and height is hardcoded to
256 x 128, this is neither 0 nor odd


[...]
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Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Opposition brings concord. Out of discord comes the fairest harmony.
-- Heraclitus
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