The theoretical minimum for a (not totally well formed) RTCP packet
is 8 bytes, so we shouldn't require 12 bytes as minimum input.
Also return AVERROR_INVALIDDATA instead of 0 if something that is
not a proper packet is given.
Signed-off-by: Martin Storsjö <martin@martin.st>
int rtcp, hmac_size, padding;
uint8_t *buf;
- if (len < 12)
- return 0;
+ if (len < 8)
+ return AVERROR_INVALIDDATA;
rtcp = RTP_PT_IS_RTCP(in[1]);
hmac_size = rtcp ? s->rtcp_hmac_size : s->rtp_hmac_size;
} else {
int ext, csrc;
int seq = AV_RB16(buf + 2);
+
+ if (len < 12)
+ return AVERROR_INVALIDDATA;
+
ssrc = AV_RB32(buf + 8);
if (seq < s->seq_largest)