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avcodec/dcadec: Check subsubframes 

Fixes: CID1239152

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit a9bf628bfd)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2015-05-14 21:29:19 +02:00
parent 474bfd5438
commit 4a49f1e764
1 changed files with 4 additions and 0 deletions
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4
libavcodec/dcadec.c
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@ -856,6 +856,10 @@ static int dca_subframe_header(DCAContext *s, int base_channel, int block_index)
if (!base_channel) {
s->subsubframes[s->current_subframe] = get_bits(&s->gb, 2) + 1;
if (block_index + s->subsubframes[s->current_subframe] > s->sample_blocks/8) {
s->subsubframes[s->current_subframe] = 1;
return AVERROR_INVALIDDATA;
}
s->partial_samples[s->current_subframe] = get_bits(&s->gb, 3);
}