OSV-2020-101 UNKNOWN READ in apache::thrift::transport::TMemoryBuffer::readSlow

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=20681 Crash type: UNKNOWN READ Crash state: apache::thrift::transport::TMemoryBuffer::readSlow apache::thrift::transport::TBufferBase::read unsigned int apache::thrift::transport::readAllapache::thrift::transport::TBuff...