OSV-2023-1272 Heap-buffer-overflow in OT::cff2::accelerator_templ_t<CFF::cff2_private_dict_opset_t, CFF::cff2_private_

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=64859 Crash type: Heap-buffer-overflow READ 2 Crash state: OT::cff2::acceleratortempltCFF::cff2privatedictopsett, CFF::cff2private hbotdrawglyph hbfontdrawglyph...