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avidec: Fix use of stream_index before validation of its range.

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-01-23 19:36:22 +01:00
parent d150a147da
commit 14d94a1952
1 changed files with 1 additions and 2 deletions
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3
libavformat/avidec.c
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@ -699,8 +699,7 @@ static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap)
} }
break; break;
case MKTAG('s', 't', 'r', 'd'): case MKTAG('s', 't', 'r', 'd'):
st = s->streams[stream_index]; if (stream_index >= (unsigned)s->nb_streams || s->streams[stream_index]->codec->extradata_size) {
if (stream_index >= (unsigned)s->nb_streams || st->codec->extradata_size) {
avio_skip(pb, size); avio_skip(pb, size);
} else { } else {
uint64_t cur_pos = avio_tell(pb); uint64_t cur_pos = avio_tell(pb);