From b7b4d99a1837775afd43bef18954680ecfa683a4 Mon Sep 17 00:00:00 2001 From: Paul B Mahol Date: Fri, 8 Jan 2016 14:56:15 +0100 Subject: [PATCH] avfilter/avf_showfreqs: fix possible null pointer dereference Signed-off-by: Paul B Mahol --- libavfilter/avf_showfreqs.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/libavfilter/avf_showfreqs.c b/libavfilter/avf_showfreqs.c index 1b1f441a6e..311dd478bd 100644 --- a/libavfilter/avf_showfreqs.c +++ b/libavfilter/avf_showfreqs.c @@ -459,8 +459,10 @@ static av_cold void uninit(AVFilterContext *ctx) av_fft_end(s->fft); for (i = 0; i < s->nb_channels; i++) { - av_freep(&s->fft_data[i]); - av_freep(&s->avg_data[i]); + if (s->fft_data) + av_freep(&s->fft_data[i]); + if (s->avg_data) + av_freep(&s->avg_data[i]); } av_freep(&s->fft_data); av_freep(&s->avg_data);