Message ID | 20200329000805.22636-2-lance.lmwang@gmail.com |
---|---|
State | Accepted |
Commit | f441fadbcffa32b71470220b522d4971a774e760 |
Headers | show |
Series | [FFmpeg-devel,v3,1/3] avfilter/af_acrossover: Check sscanf() return value | expand |
diff --git a/libavfilter/af_adelay.c b/libavfilter/af_adelay.c index c964777..6ac81c2 100644 --- a/libavfilter/af_adelay.c +++ b/libavfilter/af_adelay.c @@ -155,7 +155,10 @@ static int config_input(AVFilterLink *inlink) ret = av_sscanf(arg, "%d%c", &d->delay, &type); if (ret != 2 || type != 'S') { div = type == 's' ? 1.0 : 1000.0; - av_sscanf(arg, "%f", &delay); + if (av_sscanf(arg, "%f", &delay) != 1) { + av_log(ctx, AV_LOG_ERROR, "Invalid syntax for delay.\n"); + return AVERROR(EINVAL); + } d->delay = delay * inlink->sample_rate / div; }