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dcadec: Validate the lfe parameter

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Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Martin Storsjö 2013-09-19 15:12:06 +03:00
parent b97b1adb3f
commit a9d50bb578
1 changed files with 5 additions and 0 deletions
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5
libavcodec/dcadec.c
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@ -580,6 +580,11 @@ static int dca_parse_frame_header(DCAContext *s)
s->lfe = get_bits(&s->gb, 2);
s->predictor_history = get_bits(&s->gb, 1);
if (s->lfe > 2) {
av_log(s->avctx, AV_LOG_ERROR, "Invalid LFE value: %d\n", s->lfe);
return AVERROR_INVALIDDATA;
}
/* TODO: check CRC */
if (s->crc_present)
s->header_crc = get_bits(&s->gb, 16);