{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-68301",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-07-30T09:28:09.380Z",
        "datePublished": "2026-08-10T12:02:35.155Z",
        "dateUpdated": "2026-08-19T16:32:53.463Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-19T16:32:53.463Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: hsr: fix memory leak on slave unregistration by removing synced VLANs\n\nWhen an HSR master device is brought UP, it auto-adds VLAN 0 via\nvlan_vid0_add(), which propagates VID 0 to its slave devices (slave A and B).\n\nIf a slave device is later unregistered while HSR is active (e.g., during\nnetns cleanup or interface destruction), hsr_del_port() is called to\ndetach the slave port from the HSR master. However, hsr_del_port() currently\ndoes not delete the VLAN IDs that were synced to the slave device by HSR.\n\nAs a result, the slave device retains a refcount on VID 0 (and any other\nsynced VLANs). When the slave device is destroyed, its vlan_info /\nvlan_vid_info structure remains allocated, leading to a memory leak.\n\nFix this by calling vlan_vids_del_by_dev(port->dev, master->dev) in\nhsr_del_port() before unlinking slave A or slave B ports, matching the\npropagation logic in hsr_ndo_vlan_rx_add_vid() / hsr_ndo_vlan_rx_kill_vid()\nand the cleanup behavior in bonding and team drivers."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/hsr/hsr_slave.c"
                    ],
                    "versions": [
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                            "version": "1100242709d5644856131a9dd25d32672ebe7357",
                            "lessThan": "ccc822e9e4f09a6c2ca73ad5334570441947f94f",
                            "status": "affected",
                            "versionType": "git"
                        },
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                            "lessThan": "79ff0547676acdeceda445c3fce4071b0a887b70",
                            "status": "affected",
                            "versionType": "git"
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                        {
                            "version": "72dbae1f2f2159395089405c6c54632f2613f1be",
                            "lessThan": "f72c312af6c7897ab0f8a2b5a63f917a207a4143",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c707d2c5541d2bb94131968ad5dfeb06427a1dba",
                            "lessThan": "21d48408479a17eb65568a765930adea37e4d804",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1a8a63a5305e95519de6f941922dfcd8179f82e5",
                            "lessThan": "b5ded444621b6180df9f3d4e07045fc1fc1e8cd9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1a8a63a5305e95519de6f941922dfcd8179f82e5",
                            "lessThan": "ae995b8002d3af134560a706c0e111a89e26317c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1a8a63a5305e95519de6f941922dfcd8179f82e5",
                            "lessThan": "dcf15eaf5641812f1cfc5e96537380132a7da89d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "5.15.194",
                            "lessThan": "5.15.216",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.153",
                            "lessThan": "6.1.183",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.107",
                            "lessThan": "6.6.148",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.48",
                            "lessThan": "6.12.101",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/hsr/hsr_slave.c"
                    ],
                    "versions": [
                        {
                            "version": "6.13",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.13",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.216",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.183",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.148",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.101",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.42",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.6",
                            "lessThanOrEqual": "7.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
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                    "nodes": [
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                            "negate": false,
                            "cpeMatch": [
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                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/ccc822e9e4f09a6c2ca73ad5334570441947f94f"
                },
                {
                    "url": "https://git.kernel.org/stable/c/79ff0547676acdeceda445c3fce4071b0a887b70"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f72c312af6c7897ab0f8a2b5a63f917a207a4143"
                },
                {
                    "url": "https://git.kernel.org/stable/c/21d48408479a17eb65568a765930adea37e4d804"
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                },
                {
                    "url": "https://git.kernel.org/stable/c/dcf15eaf5641812f1cfc5e96537380132a7da89d"
                }
            ],
            "title": "net: hsr: fix memory leak on slave unregistration by removing synced VLANs",
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}