{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-97472",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-24T16:01:01.148Z",
        "datePublished": "2026-09-24T16:04:14.951Z",
        "dateUpdated": "2026-10-03T10:58:42.012Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-03T10:58:42.012Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: addrconf: fix temp address generation after prefix deprecation\n\nWhen a router temporarily deprecates an IPv6 prefix (either by sending a\nRouter Advertisement with Preferred Lifetime = 0 or by letting the\nlifetime expire) and later restores it, the kernel permanently loses its\nability to generate temporary privacy addresses (RFC 8981) for that\nprefix.\n\nThis happens because the address worker attempts to generate a\nreplacement temporary address when the current one nears expiration. As\nthe base prefix is deprecated already, the generation fails after\nmarking the temporary address as already having spawned a replacement\n(ifp->regen_count++).\n\nWhen the router eventually restores the prefix, the temporary address\nbecomes active again. However, once it naturally expires, the address\nworker sees this temporary address already tried to generate one and\nskips the regeneration.\n\nFix the issue by resetting the regen_count check of the latest temp\naddress generated for the prefix updated by the incoming RA."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/ipv6/addrconf.c"
                    ],
                    "versions": [
                        {
                            "version": "76f793e3a47139d340185cbc1a314740c09b13d3",
                            "lessThan": "b00f7c1da82a809156f785ed37536c2d2584927d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "76f793e3a47139d340185cbc1a314740c09b13d3",
                            "lessThan": "6da8ba900b85e6478e211427630c67595fb707a4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "76f793e3a47139d340185cbc1a314740c09b13d3",
                            "lessThan": "4f7d2a8dc364c4e55d0a1533451339008512933f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "76f793e3a47139d340185cbc1a314740c09b13d3",
                            "lessThan": "f601ec5c92b3260c742f27a5d2fd289e30ae798f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "76f793e3a47139d340185cbc1a314740c09b13d3",
                            "lessThan": "bff7b87dfa28a1502c18d0c6f1fadda5162fa854",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "76f793e3a47139d340185cbc1a314740c09b13d3",
                            "lessThan": "4df5597c65446135362f72880995e8920f058fa0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "76f793e3a47139d340185cbc1a314740c09b13d3",
                            "lessThan": "e20d8922aa8fe441d291364c96c2179a005b79ea",
                            "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/ipv6/addrconf.c"
                    ],
                    "versions": [
                        {
                            "version": "3.2",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "3.2",
                            "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",
                            "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": "3.2",
                                    "versionEndExcluding": "5.10.271"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.2",
                                    "versionEndExcluding": "5.15.222"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.2",
                                    "versionEndExcluding": "6.1.189"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.2",
                                    "versionEndExcluding": "6.6.158"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.2",
                                    "versionEndExcluding": "6.12.111"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.2",
                                    "versionEndExcluding": "6.18.53"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.2",
                                    "versionEndExcluding": "7.2"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/b00f7c1da82a809156f785ed37536c2d2584927d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/6da8ba900b85e6478e211427630c67595fb707a4"
                },
                {
                    "url": "https://git.kernel.org/stable/c/4f7d2a8dc364c4e55d0a1533451339008512933f"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f601ec5c92b3260c742f27a5d2fd289e30ae798f"
                },
                {
                    "url": "https://git.kernel.org/stable/c/bff7b87dfa28a1502c18d0c6f1fadda5162fa854"
                },
                {
                    "url": "https://git.kernel.org/stable/c/4df5597c65446135362f72880995e8920f058fa0"
                },
                {
                    "url": "https://git.kernel.org/stable/c/e20d8922aa8fe441d291364c96c2179a005b79ea"
                }
            ],
            "title": "ipv6: addrconf: fix temp address generation after prefix deprecation",
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}