From 612d8b02027ed320f820ed7ef22e34eb1f0ab7d3 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sat, 5 Jun 2021 20:04:45 +0200 Subject: [PATCH] avfilter/vf_mestimate: Check b_count Fixes: left shift of negative value -1 Fixes: Ticket8270 Signed-off-by: Michael Niedermayer (cherry picked from commit 06af6e101bbd04e8ecc5337bc3b6894a5e058e14) Signed-off-by: Michael Niedermayer --- libavfilter/vf_mestimate.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavfilter/vf_mestimate.c b/libavfilter/vf_mestimate.c index 7ecfe7da60..9a2865a0cb 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])