OSV-2020-1849 Use-of-uninitialized-value in RDKit::SubstanceGroup::getBondType

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=25906 Crash type: Use-of-uninitialized-value Crash state: RDKit::SubstanceGroup::getBondType RDKit::SubstanceGroup::addCState RDKit::SGroupParsing::ParseSGroupV2000SBVLine...

rdkit:mol_data_stream_to_mol_fuzzer: Bad-cast to RDKit::Atom from invalid vptr in RDKit::SubstanceGroup::addAtomWithBookmark

Detailed Report: https://oss-fuzz.com/testcase?key=6001237489876992 Project: rdkit Fuzzing Engine: libFuzzer Fuzz Target: moldatastreamtomolfuzzer Job Type: libfuzzerubsanrdkit Platform Id: linux Crash Type: Bad-cast Crash Address: 0x0000032d2ea0 Crash State: Bad-cast to RDKit::Atom from invalid...