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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-06-05 20:04:45 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-09-12 11:22:04 +0200 |
| commit | 7590dbf9be5e70432699cc70e5d96f9a6eb30dfc (patch) | |
| tree | b789d0b09c0b521c847a7f3ebd32891f1779950b | |
| parent | bbec731fca035c854ac738b0e8ddb2234edf984a (diff) | |
| download | ffmpeg-7590dbf9be5e70432699cc70e5d96f9a6eb30dfc.tar.gz | |
avfilter/vf_mestimate: Check b_count
Fixes: left shift of negative value -1
Fixes: Ticket8270
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 06af6e101bbd04e8ecc5337bc3b6894a5e058e14)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavfilter/vf_mestimate.c | 3 |
1 files changed, 3 insertions, 0 deletions
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]) |