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[FFmpeg-devel,3/5] avfilter/vf_mestimate: Check b_count

Message ID 20210606134757.18919-3-michael@niedermayer.cc
State New
Headers show
Series [FFmpeg-devel,1/5] avfilter/vf_ciescope: Handle black as very dark neutral gray
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Commit Message

Michael Niedermayer June 6, 2021, 1:47 p.m. UTC
Fixes: left shift of negative value -1
Fixes: Ticket8270

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libavfilter/vf_mestimate.c | 3 +++
 1 file changed, 3 insertions(+)
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Patch

diff --git a/libavfilter/vf_mestimate.c b/libavfilter/vf_mestimate.c
index daf7fde95f..f1935244c1 100644
--- a/libavfilter/vf_mestimate.c
+++ b/libavfilter/vf_mestimate.c
@@ -100,6 +100,9 @@  static int config_input(AVFilterLink *inlink)
     s->b_height = inlink->h >> s->log2_mb_size;
     s->b_count = s->b_width * s->b_height;
 
+    if (s->b_count == 0)
+        return AVERROR(EINVAL);
+
     for (i = 0; i < 3; i++) {
         s->mv_table[i] = av_mallocz_array(s->b_count, sizeof(*s->mv_table[0]));
         if (!s->mv_table[i])