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avcodec/hcom: check that index into array is valid

This commit is contained in:
Paul B Mahol 2019-03-03 20:21:20 +01:00
parent a367a932d3
commit 17008a0107
1 changed files with 4 additions and 0 deletions
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4
libavcodec/hcom.c
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@ -63,6 +63,10 @@ static av_cold int hcom_init(AVCodecContext *avctx)
for (int i = 0; i < s->dict_entries; i++) {
s->dict[i].l = AV_RB16(avctx->extradata + 6 + 4 * i);
s->dict[i].r = AV_RB16(avctx->extradata + 6 + 4 * i + 2);
if (s->dict[i].l >= 0 &&
(s->dict[i].l >= s->dict_entries ||
s->dict[i].r >= s->dict_entries))
return AVERROR_INVALIDDATA;
}
avctx->sample_fmt = AV_SAMPLE_FMT_U8;