avfilter/af_stereowiden: Check length

Fixes: out of array access Fixes: tickets/10746/poc13ffmpeg Found-by: Zeng Yunxiang Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
FFmpeg · Dec 29, 2023 · 50f0f8c · 50f0f8c
1 parent ff451df
commit 50f0f8c
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/libavfilter/af_stereowiden.c b/libavfilter/af_stereowiden.c
@@ -74,6 +74,8 @@ static int config_input(AVFilterLink *inlink)
 
     s->length = lrintf(s->delay * inlink->sample_rate / 1000);
     s->length *= 2;
+    if (s->length == 0)
+        return AVERROR(EINVAL);
     s->buffer = av_calloc(s->length, sizeof(*s->buffer));
     if (!s->buffer)
         return AVERROR(ENOMEM);