Provide references for CVE-2015-9252.
Where can I find more information about CVE-2015-9252?
References are available at: https://github.com/qpdf/qpdf/issues/51, https://usn.ubuntu.com/3638-1/, https://github.com/qpdf/qpdf/commit/701b518d5c56a1449825a3a37a716c58e05e1c3e.