diff options
| -rw-r--r-- | libavformat/vividas.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/libavformat/vividas.c b/libavformat/vividas.c index d7a6e74650..2668f93f06 100644 --- a/libavformat/vividas.c +++ b/libavformat/vividas.c @@ -682,6 +682,7 @@ static int viv_read_packet(AVFormatContext *s, if (viv->sb_entries[viv->current_sb_entry].flag == 0) { uint64_t v_size = ffio_read_varlen(pb); + int last = 0, last_start; if (!viv->num_audio) return AVERROR_INVALIDDATA; @@ -705,12 +706,18 @@ static int viv_read_packet(AVFormatContext *s, if (i > 0 && start == 0) break; + if (start < last) + return AVERROR_INVALIDDATA; viv->n_audio_subpackets = i + 1; + last = viv->audio_subpackets[i].start = start; viv->audio_subpackets[i].pcm_bytes = pcm_bytes; } + last_start = viv->audio_subpackets[viv->n_audio_subpackets].start = (int)(off - avio_tell(pb)); + if (last_start < last) + return AVERROR_INVALIDDATA; viv->current_audio_subpacket = 0; } else { |