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avformat/mov: add extra sanity checks before setting the primary extradata

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Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer
2025-08-01 14:15:47 -03:00
parent c6b3aae0ee
commit 2b522f537f
1 changed files with 2 additions and 1 deletions
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3
libavformat/mov.c
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@ -10667,7 +10667,8 @@ static int mov_read_header(AVFormatContext *s)
fix_timescale(mov, sc); fix_timescale(mov, sc);
/* Set the primary extradata based on the first Sample. */ /* Set the primary extradata based on the first Sample. */
if (sc->stsc_count && sc->extradata_size && !sc->iamf) { if (sc->stsc_count && sc->extradata_size && !sc->iamf &&
sc->stsc_data[0].id > 0 && sc->stsc_data[0].id <= sc->stsd_count) {
sc->last_stsd_index = sc->stsc_data[0].id - 1; sc->last_stsd_index = sc->stsc_data[0].id - 1;
av_freep(&st->codecpar->extradata); av_freep(&st->codecpar->extradata);
st->codecpar->extradata_size = sc->extradata_size[sc->last_stsd_index]; st->codecpar->extradata_size = sc->extradata_size[sc->last_stsd_index];