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avformat/brstm: fix overflow

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Signed-off-by: Paul B Mahol <onemda@gmail.com>
(cherry picked from commit 3441fef0f8)
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
This commit is contained in:
Paul B Mahol 2015-09-23 19:07:48 +02:00 committed by Andreas Cadhalpun
parent b8fa3ff95d
commit 40ebeee3fc
1 changed files with 4 additions and 0 deletions
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4
libavformat/brstm.c
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@ -389,6 +389,10 @@ static int read_packet(AVFormatContext *s, AVPacket *pkt)
codec->codec_id == AV_CODEC_ID_ADPCM_THP_LE) { codec->codec_id == AV_CODEC_ID_ADPCM_THP_LE) {
uint8_t *dst; uint8_t *dst;
if (size > (INT_MAX - 32 - 4) ||
(32 + 4 + size) > (INT_MAX / codec->channels) ||
(32 + 4 + size) * codec->channels > INT_MAX - 8)
return AVERROR_INVALIDDATA;
if (av_new_packet(pkt, 8 + (32 + 4 + size) * codec->channels) < 0) if (av_new_packet(pkt, 8 + (32 + 4 + size) * codec->channels) < 0)
return AVERROR(ENOMEM); return AVERROR(ENOMEM);
dst = pkt->data; dst = pkt->data;