golang-protobuf: encoding/protojson, internal/encoding/json: infinite loop in protojson.Unmarshal when unmarshaling certain forms of invalid JSON

A flaw was found in Golang's protobuf module, where the unmarshal function can enter an infinite loop when processing certain invalid inputs. This issue occurs during unmarshaling into a message that includes a google.protobuf.Any or when the UnmarshalOptions.DiscardUnknown option is enabled. Thi...