[FFmpeg-devel] [PATCH] lavfi/zmq: Avoid mem copy past the end of input buffer

[Carl Eugen Hoyos]

Am Di., 30. Juli 2019 um 23:25 Uhr schrieb Andriy Gelman
<andriy.gelman at gmail.com>:
>
> From: Andriy Gelman <andriy.gelman at gmail.com>
>
> ---
>  libavfilter/f_zmq.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/libavfilter/f_zmq.c b/libavfilter/f_zmq.c
> index 89da5bef06..744c721305 100644
> --- a/libavfilter/f_zmq.c
> +++ b/libavfilter/f_zmq.c
> @@ -139,7 +139,7 @@ static int recv_msg(AVFilterContext *ctx, char **buf, int *buf_size)
>          ret = AVERROR(ENOMEM);
>          goto end;
>      }
> -    memcpy(*buf, zmq_msg_data(&msg), *buf_size);
> +    memcpy(*buf, zmq_msg_data(&msg), *buf_size - 1);

Patch applied.

Carl Eugen