mm_sshpam_init_ctx(Authctxt *authctxt)
{
	Buffer m;
	int success;
 
 	debug3("%s", __func__);
 	buffer_init(&m);
 	mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PAM_INIT_CTX, &m);
 	debug3("%s: waiting for MONITOR_ANS_PAM_INIT_CTX", __func__);
 	mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_PAM_INIT_CTX, &m);
	success = buffer_get_int(&m);
	if (success == 0) {
		debug3("%s: pam_init_ctx failed", __func__);
		buffer_free(&m);
		return (NULL);
	}
	buffer_free(&m);
	return (authctxt);
}

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.