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| author | Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com> | 2016-12-14 01:53:14 +0100 |
|---|---|---|
| committer | Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com> | 2016-12-15 01:25:34 +0100 |
| commit | e558a6348ac10e74c54fb50ffd783ff9b5aec050 (patch) | |
| tree | 702e1cabae3a9773bd802818ac0c9e3bb04c378a /libavformat/4xm.c | |
| parent | e54b61a9ce19aa532e176869e8fcfc955dca6222 (diff) | |
| download | ffmpeg-streaming-e558a6348ac10e74c54fb50ffd783ff9b5aec050.zip ffmpeg-streaming-e558a6348ac10e74c54fb50ffd783ff9b5aec050.tar.gz | |
4xm: prevent overflow during bit rate calculation
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Diffstat (limited to 'libavformat/4xm.c')
| -rw-r--r-- | libavformat/4xm.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/libavformat/4xm.c b/libavformat/4xm.c index 8a50778..2758b69 100644 --- a/libavformat/4xm.c +++ b/libavformat/4xm.c @@ -163,6 +163,12 @@ static int parse_strk(AVFormatContext *s, return AVERROR_INVALIDDATA; } + if (fourxm->tracks[track].sample_rate > INT64_MAX / fourxm->tracks[track].bits / fourxm->tracks[track].channels) { + av_log(s, AV_LOG_ERROR, "Overflow during bit rate calculation %d * %d * %d\n", + fourxm->tracks[track].sample_rate, fourxm->tracks[track].bits, fourxm->tracks[track].channels); + return AVERROR_INVALIDDATA; + } + /* allocate a new AVStream */ st = avformat_new_stream(s, NULL); if (!st) @@ -178,7 +184,7 @@ static int parse_strk(AVFormatContext *s, st->codecpar->channels = fourxm->tracks[track].channels; st->codecpar->sample_rate = fourxm->tracks[track].sample_rate; st->codecpar->bits_per_coded_sample = fourxm->tracks[track].bits; - st->codecpar->bit_rate = st->codecpar->channels * + st->codecpar->bit_rate = (int64_t)st->codecpar->channels * st->codecpar->sample_rate * st->codecpar->bits_per_coded_sample; st->codecpar->block_align = st->codecpar->channels * |
