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brstm: make sure an ADPC chunk was read for adpcm_thp 

This fixes NULL pointer dereferencing.

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 12:57:38 +01:00
parent e7a7b3135a
commit d7d37c479f
1 changed files with 5 additions and 0 deletions
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5
libavformat/brstm.c
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@ -389,6 +389,11 @@ static int read_packet(AVFormatContext *s, AVPacket *pkt)
codec->codec_id == AV_CODEC_ID_ADPCM_THP_LE) {
uint8_t *dst;
if (!b->adpc) {
av_log(s, AV_LOG_ERROR, "adpcm_thp requires ADPC chunk, but none was found.\n");
return AVERROR_INVALIDDATA;
}
if (size > (INT_MAX - 32 - 4) ||
(32 + 4 + size) > (INT_MAX / codec->channels) ||
(32 + 4 + size) * codec->channels > INT_MAX - 8)