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wav: make sure neither data_size nor sample_count is negative. 

Signed-off-by: Anton Khirnov <anton@khirnov.net>
This commit is contained in:
Tomas Härdin 2011-05-17 19:52:36 +02:00 committed by Anton Khirnov
parent 7f84055e2d
commit 1cf18de982
1 changed files with 6 additions and 0 deletions
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6
libavformat/wav.c
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@ -318,6 +318,12 @@ static int wav_read_header(AVFormatContext *s,
avio_rl64(pb); /* RIFF size */
data_size = avio_rl64(pb);
sample_count = avio_rl64(pb);
if (data_size < 0 || sample_count < 0) {
av_log(s, AV_LOG_ERROR, "negative data_size and/or sample_count in "
"ds64: data_size = %"PRId64", sample_count = %"PRId64"\n",
data_size, sample_count);
return AVERROR_INVALIDDATA;
}
avio_skip(pb, size - 16); /* skip rest of ds64 chunk */
}