__u32 secure_tcpv6_sequence_number(__be32 *saddr, __be32 *daddr,
				   __be16 sport, __be16 dport)
{
	u32 secret[MD5_MESSAGE_BYTES / 4];
	u32 hash[MD5_DIGEST_WORDS];
	u32 i;

	memcpy(hash, saddr, 16);
	for (i = 0; i < 4; i++)
		secret[i] = net_secret[i] + daddr[i];
	secret[4] = net_secret[4] +
		(((__force u16)sport << 16) + (__force u16)dport);
	for (i = 5; i < MD5_MESSAGE_BYTES / 4; i++)
		secret[i] = net_secret[i];

	md5_transform(hash, secret);

	return seq_scale(hash[0]);
}
NVD is only using a subset of CWE for mapping instead of the entire CWE, and the weakness type is not covered by that subset.