channels = get_le16(&s->pb);
bps = get_le16(&s->pb);
samplerate = get_le32(&s->pb);
+ if(samplerate <= 0 || samplerate > 1000000){
+ av_log(s, AV_LOG_ERROR, "nonsense samplerate\n");
+ return -1;
+ }
+
datalen = get_le32(&s->pb);
+ if(datalen < 0){
+ av_log(s, AV_LOG_ERROR, "nonsense datalen\n");
+ return -1;
+ }
+
url_fskip(&s->pb, 4); // header crc
framelen = 1.04489795918367346939 * samplerate;
c->totalframes = datalen / framelen + ((datalen % framelen) ? 1 : 0);
c->currentframe = 0;
+ if(c->totalframes >= UINT_MAX/sizeof(uint32_t)){
+ av_log(s, AV_LOG_ERROR, "totalframes too large\n");
+ return -1;
+ }
c->seektable = av_mallocz(sizeof(uint32_t)*c->totalframes);
if (!c->seektable)
return AVERROR_NOMEM;
st->codec->bits_per_sample = bps;
st->codec->extradata_size = url_ftell(&s->pb) - start;
+ if(st->codec->extradata_size+FF_INPUT_BUFFER_PADDING_SIZE <= (unsigned)st->codec->extradata_size){
+ //this check is redundant as get_buffer should fail
+ av_log(s, AV_LOG_ERROR, "extradata_size too large\n");
+ return -1;
+ }
st->codec->extradata = av_mallocz(st->codec->extradata_size+FF_INPUT_BUFFER_PADDING_SIZE);
url_fseek(&s->pb, start, SEEK_SET); // or SEEK_CUR and -size ? :)
get_buffer(&s->pb, st->codec->extradata, st->codec->extradata_size);