Provide references for CVE-2018-6558.
Where can I find more information about CVE-2018-6558?
References are available at: https://github.com/google/fscrypt/issues/77, https://github.com/google/fscrypt/commit/3022c1603d968c22f147b4a2c49c4637dd1be91b, https://github.com/google/fscrypt/commit/315f9b042237200174a1fb99427f74027e191d66, https://launchpad.net/bugs/1787548.