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brstm: also allocate b->table in read_packet

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This fixes NULL pointer dereferencing if the codec is forced to
adpcm_thp even though a different one was detected.

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
This commit is contained in:
Andreas Cadhalpun 2016-01-04 12:53:20 +01:00
parent d7d37c479f
commit bcf4ee26a0
1 changed files with 4 additions and 0 deletions
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4
libavformat/brstm.c
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@ -392,6 +392,10 @@ static int read_packet(AVFormatContext *s, AVPacket *pkt)
if (!b->adpc) {
av_log(s, AV_LOG_ERROR, "adpcm_thp requires ADPC chunk, but none was found.\n");
return AVERROR_INVALIDDATA;
if (!b->table) {
b->table = av_mallocz(32 * codec->channels);
if (!b->table)
return AVERROR(ENOMEM);
}
if (size > (INT_MAX - 32 - 4) ||