wstrncat() unsigned integer underflow leads to an off-by-one null write in wolfSSH on non-Windows platforms

{
                    "vendor": "wolfSSL Inc.",
                    "product": "wolfSSH",
                    "repo": "https://github.com/wolfSSL/wolfssh",
                    "programFiles": [
                        "src/port.c",
                        "src/ssh.c"
                    ],
                    "versions": [
                        {
                            "status": "affected",
                            "version": "1.4.11",
                            "lessThanOrEqual": "1.5.0",
                            "changes": [
                                {
                                    "at": "1.6.0",
                                    "status": "unaffected"
                                }
                            ],
                            "versionType": "semver"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }