On 27 November 2017 at 01:12, Pan Bian <bianpan2...@163.com> wrote:
> The function avformat_alloc_context() will return a NULL pointer on
> failure. However, in function read_ffserver_streams(), its return value
> is not validated and the subsequent dereference may result in a bad
> memory access bug. Check its return value against NULL and avoid
> potential NULL dereference.
>
> Signed-off-by: Pan Bian <bianpan2...@163.com>
> ---
> fftools/ffmpeg_opt.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/fftools/ffmpeg_opt.c b/fftools/ffmpeg_opt.c
> index 9445a2d..7e51c5a 100644
> --- a/fftools/ffmpeg_opt.c
> +++ b/fftools/ffmpeg_opt.c
> @@ -2000,6 +2000,8 @@ static int read_ffserver_streams(OptionsContext *o,
> AVFormatContext *s, const ch
> {
> int i, err;
> AVFormatContext *ic = avformat_alloc_context();
> + if (!ic)
> + return AVERROR(ENOMEM);
>
> ic->interrupt_callback = int_cb;
> err = avformat_open_input(&ic, filename, NULL, NULL);
> --
> 1.9.1
>
>
> _______________________________________________
> ffmpeg-devel mailing list
> ffmpeg-devel@ffmpeg.org
> http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
>
Pointless as ffserver's getting removed in a day or two
_______________________________________________
ffmpeg-devel mailing list
ffmpeg-devel@ffmpeg.org
http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
