RT-Thread through 5.3.0 Memory Corruption via USB CDC VCOM Driver

{
                    "vendor": "RT-Thread",
                    "product": "rt-thread",
                    "defaultStatus": "unaffected",
                    "versions": [
                        {
                            "version": "0",
                            "status": "affected",
                            "versionType": "semver",
                            "lessThanOrEqual": "5.3.0"
                        }
                    ]
                }