net/sched: cls_route: free emptied bucket on filter move

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/sched/cls_route.c"
                    ],
                    "versions": [
                        {
                            "version": "1e052be69d045c8d0f82ff1116fd3e5a79661745",
                            "lessThan": "9e7741b41a25b9d49df4d262fa314342e6f95c50",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1e052be69d045c8d0f82ff1116fd3e5a79661745",
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                            "status": "affected",
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                        },
                        {
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                            "lessThan": "cc99d26b12431e4e4d0e346ec32764eb42c0aed9",
                            "status": "affected",
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                        },
                        {
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                            "lessThan": "41e94079200aaf0cdbe4594b0af75710b33da124",
                            "status": "affected",
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                        },
                        {
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                            "lessThan": "2e2f130951d34871b0643bf700164d97cff4b427",
                            "status": "affected",
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                        },
                        {
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                            "status": "affected",
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                        {
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                        },
                        {
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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/sched/cls_route.c"
                    ],
                    "versions": [
                        {
                            "version": "4.1",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.1",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.271",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.222",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.189",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.158",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.111",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.53",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.7",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }