ABT-888 and Temozolomide in Treating Young Patients With Recurrent or Refractory CNS Tumors

Inclusion Criteria: * Patients with a diagnosis of a primary CNS malignancy (including low-grade glioma) that is recurrent or refractory to standard therapy and for which there is no known curative therapy; all patients must have had histological verification of malignancy at initial diagnosis or relapse, excluding patients with diffuse intrinsic brain stem tumors, optic pathway tumors or CNS germ cell tumors with elevations of reliable serum or CSF tumor markers (alpha-fetoprotein or beta-HCG); patients with intrinsic pontine gliomas or optic pathway tumors do not require histological confirmation of disease but should have clinical and/or radiographic evidence of progression * Patients must have Karnofsky Performance Score (for patients \> 16 years of age) or Lansky Performance Score (for patients =\< 16 years of age) \>= 50% assessed within two weeks of study enrollment * Patients must be able to take oral medications (either capsules or liquid); patients with neurologic deficits must have been stable for a minimum of 1 week prior to study entry; patients who are unable to walk because of paralysis, but who are up in a wheelchair, will be considered ambulatory for the purpose of assessing the performance score * Patients must have fully recovered from the acute toxic effects of all prior chemotherapy, immunotherapy, or radiotherapy prior to entering this study; recovery is defined as all AE"s, attributable to prior therapy, having improved to grade 2 or better or as outli…