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matroskadec: Verify realaudio codec parameters 

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 2013-09-16 15:36:24 +03:00
parent e1f3847f86
commit 569d18aa9d
1 changed files with 4 additions and 0 deletions
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4
libavformat/matroskadec.c
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@ -1622,6 +1622,10 @@ static int matroska_read_header(AVFormatContext *s)
track->audio.sub_packet_h = avio_rb16(&b);
track->audio.frame_size = avio_rb16(&b);
track->audio.sub_packet_size = avio_rb16(&b);
if (flavor <= 0 || track->audio.coded_framesize <= 0 ||
track->audio.sub_packet_h <= 0 || track->audio.frame_size <= 0 ||
track->audio.sub_packet_size <= 0)
return AVERROR_INVALIDDATA;
track->audio.buf = av_malloc(track->audio.frame_size * track->audio.sub_packet_h);
if (codec_id == AV_CODEC_ID_RA_288) {
st->codec->block_align = track->audio.coded_framesize;