netfilter: xt_nat: reject unsupported target families

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/netfilter/xt_nat.c"
                    ],
                    "versions": [
                        {
                            "version": "c7232c9979cba684c50b64c513c4a83c9aa70563",
                            "lessThan": "49abe564391411057a26a9a943c8e17867c3b9b4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c7232c9979cba684c50b64c513c4a83c9aa70563",
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                            "status": "affected",
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                        },
                        {
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                            "status": "affected",
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                        },
                        {
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                            "lessThan": "a842dab87cab29f2a5798a47b2dc5e6a449950bf",
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                        },
                        {
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                            "status": "affected",
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                        },
                        {
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                            "lessThan": "679ced28a9dc2f6dc679eb05027d779693e60902",
                            "status": "affected",
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                        },
                        {
                            "version": "c7232c9979cba684c50b64c513c4a83c9aa70563",
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                            "status": "affected",
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                        },
                        {
                            "version": "c7232c9979cba684c50b64c513c4a83c9aa70563",
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                            "status": "affected",
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                        }
                    ]
                }

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/netfilter/xt_nat.c"
                    ],
                    "versions": [
                        {
                            "version": "3.7",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "3.7",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.261",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.212",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.178",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.145",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.97",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.40",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.5",
                            "lessThanOrEqual": "7.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }