From f441fadbcffa32b71470220b522d4971a774e760 Mon Sep 17 00:00:00 2001 From: Limin Wang Date: Sun, 29 Mar 2020 08:08:05 +0800 Subject: [PATCH 1/2] avfilter/af_adelay: Check sscanf() return value Reviewed-by: Michael Niedermayer Signed-off-by: Limin Wang --- libavfilter/af_adelay.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/libavfilter/af_adelay.c b/libavfilter/af_adelay.c index c9647771f2..6ac81c2a3e 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; } -- 2.24.1.windows.2