sample_rate_frac);
if ((header_size + 4) & 7 || header_size < SOX_FIXED_HDR + comment_size
- || st->codecpar->channels > 65535) /* Reserve top 16 bits */ {
+ || st->codecpar->channels > 65535 || st->codecpar->channels <= 0) /* Reserve top 16 bits */ {
av_log(s, AV_LOG_ERROR, "invalid header\n");
return AVERROR_INVALIDDATA;
}