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Guard against invalid memory read 

Originally committed as revision 22207 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Peter Ross 2010-03-04 13:26:01 +00:00
parent b5e2bb8c3c
commit 4ffa6e78c2
1 changed files with 3 additions and 1 deletions
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4
libavformat/bink.c
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@ -210,7 +210,7 @@ static int read_packet(AVFormatContext *s, AVPacket *pkt)
}
bink->remain_packet_size -= 4 + audio_size;
bink->current_track++;
if (audio_size > 0) {
if (audio_size >= 4) {
/* get one audio packet per track */
if ((ret = av_get_packet(pb, pkt, audio_size))
!= audio_size)
@ -223,6 +223,8 @@ static int read_packet(AVFormatContext *s, AVPacket *pkt)
bink->audio_pts[bink->current_track -1] +=
AV_RL32(pkt->data) / (2 * s->streams[bink->current_track]->codec->channels);
return 0;
} else {
url_fseek(pb, audio_size, SEEK_CUR);
}
}