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avformat/mov: Don't allow negative sample sizes.

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Signed-off-by: Dale Curtis <dalecurtis@chromium.org>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Dale Curtis 2020-05-14 15:31:55 -07:00 committed by Michael Niedermayer
parent ed7d73355e
commit 2d8d554f15
1 changed files with 4 additions and 0 deletions
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libavformat/mov.c
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@ -2885,6 +2885,10 @@ static int mov_read_stsz(MOVContext *c, AVIOContext *pb, MOVAtom atom)
for (i = 0; i < entries && !pb->eof_reached; i++) { for (i = 0; i < entries && !pb->eof_reached; i++) {
sc->sample_sizes[i] = get_bits_long(&gb, field_size); sc->sample_sizes[i] = get_bits_long(&gb, field_size);
if (sc->sample_sizes[i] < 0) {
av_log(c->fc, AV_LOG_ERROR, "Invalid sample size %d\n", sc->sample_sizes[i]);
return AVERROR_INVALIDDATA;
}
sc->data_size += sc->sample_sizes[i]; sc->data_size += sc->sample_sizes[i];
} }