Memory corruption (double free / use-after-free) vulnerability in core string handling impacts Qt for MCUs

{
                    "vendor": "qt",
                    "product": "Qt_for_MCUs",
                    "modules": [
                        "qul"
                    ],
                    "versions": [
                        {
                            "status": "affected",
                            "version": "2.12.1",
                            "lessThan": "2.12.3",
                            "versionType": "python"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }