{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-100071",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-25T10:25:14.456Z",
        "datePublished": "2026-09-25T13:06:44.956Z",
        "dateUpdated": "2026-10-19T08:43:03.400Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T08:43:03.400Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: hsr: free learned nodes on device setup failure\n\nhsr_dev_finalize() can fail after a lower-device RX handler has\nalready been registered (slave A is added before the failable slave B\nand interlink adds). RX handlers run in softirq regardless of the\nmaster's state, so frames received in that window can learn dynamic\nnodes into node_db, and the error unwind never releases them.\n\nFree both owned dynamic databases in the unwind, mirroring\nhsr_dellink(). proxy_node_db is provably empty on every current error\nexit (only interlink RX feeds it, and the interlink add is the last\nfailable step) and is freed for symmetry. The order is safe:\nhsr_del_port() unregisters each RX handler with synchronize_net()\nbefore hsr_del_nodes() runs, which removes remaining entries with\nlist_del_rcu() and defers their release with call_rcu() for readers\nalready under RCU."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/hsr/hsr_device.c"
                    ],
                    "versions": [
                        {
                            "version": "81ba6afd6e6443d2bf4bf40f16df1f1f91c603f8",
                            "lessThan": "e691eee886871b933d772ffc76d66c80b4c0a25e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "81ba6afd6e6443d2bf4bf40f16df1f1f91c603f8",
                            "lessThan": "0a340ffd96943a49a78e367efac9517ca767d99b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "81ba6afd6e6443d2bf4bf40f16df1f1f91c603f8",
                            "lessThan": "f7289e3492f2694dccd3d79287e0e31879b58650",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "81ba6afd6e6443d2bf4bf40f16df1f1f91c603f8",
                            "lessThan": "65702339b3e9fd792f65d4b740928798194d86ce",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "81ba6afd6e6443d2bf4bf40f16df1f1f91c603f8",
                            "lessThan": "49b01f2939abc676a6f9a118f07a10110ee5f683",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "81ba6afd6e6443d2bf4bf40f16df1f1f91c603f8",
                            "lessThan": "7f16289b91eb316f170a6bd22d32e6c632f6a5b6",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/hsr/hsr_device.c"
                    ],
                    "versions": [
                        {
                            "version": "3.17",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "3.17",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.188",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.157",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.110",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.52",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.6",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.17",
                                    "versionEndExcluding": "6.1.188"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.17",
                                    "versionEndExcluding": "6.6.157"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.17",
                                    "versionEndExcluding": "6.12.110"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.17",
                                    "versionEndExcluding": "6.18.52"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.17",
                                    "versionEndExcluding": "7.2.6"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.17",
                                    "versionEndExcluding": "7.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/e691eee886871b933d772ffc76d66c80b4c0a25e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/0a340ffd96943a49a78e367efac9517ca767d99b"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f7289e3492f2694dccd3d79287e0e31879b58650"
                },
                {
                    "url": "https://git.kernel.org/stable/c/65702339b3e9fd792f65d4b740928798194d86ce"
                },
                {
                    "url": "https://git.kernel.org/stable/c/49b01f2939abc676a6f9a118f07a10110ee5f683"
                },
                {
                    "url": "https://git.kernel.org/stable/c/7f16289b91eb316f170a6bd22d32e6c632f6a5b6"
                }
            ],
            "title": "net: hsr: free learned nodes on device setup failure",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}