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avformat/bintext: avoid division by zero

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Fixes #8335

(cherry picked from commit 9d711a90fd)

Fixes ticket #8484.
This commit is contained in:
Paul B Mahol 2019-10-25 12:16:29 +02:00 committed by Carl Eugen Hoyos
parent 192d1d34eb
commit 19bfd72126
1 changed files with 3 additions and 1 deletions
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4
libavformat/bintext.c
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@ -149,7 +149,7 @@ static int bin_probe(const AVProbeData *p)
return AVPROBE_SCORE_EXTENSION + 1;
predict_width(&par, p->buf_size, got_width);
if (par.width <= 0)
if (par.width < 8)
return 0;
calculate_height(&par, p->buf_size);
if (par.height <= 0)
@ -195,6 +195,8 @@ static int bintext_read_header(AVFormatContext *s)
next_tag_read(s, &bin->fsize);
if (!bin->width) {
predict_width(st->codecpar, bin->fsize, got_width);
if (st->codecpar->width < 8)
return AVERROR_INVALIDDATA;
calculate_height(st->codecpar, bin->fsize);
}
avio_seek(pb, 0, SEEK_SET);