{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-63969",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-07-19T07:54:57.024Z",
        "datePublished": "2026-07-19T14:55:56.330Z",
        "dateUpdated": "2026-07-19T14:55:56.330Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-07-19T14:55:56.330Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: fix possible infinite loop in rt6_fill_node()\n\nSashiko reported this issue [1]. Apply the same fix as\ncommit f8d8ce1b515a (\"ipv6: fix possible infinite loop in fib6_info_uses_dev()\").\n\nWriters holding tb6_lock can list_del_rcu(&rt->fib6_siblings)\nwithout waiting for RCU readers; rt->fib6_siblings.next then still\npoints into the old ring and this softirq-side walker never reaches\n&rt->fib6_siblings, causing a CPU stall. fib6_del_route() always\nWRITE_ONCE()s rt->fib6_nsiblings to 0 before list_del_rcu(), so an\ninside-loop check is a reliable detach signal.\n\n[1] https://sashiko.dev/#/patchset/20260526020227.4857-1-jiayuan.chen%40linux.dev"
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/ipv6/route.c"
                    ],
                    "versions": [
                        {
                            "version": "d0ec61c9f3583b76aebdbb271f5c0d3fcccd48b2",
                            "lessThan": "b014a63d2f2c2c767762b548381882dfb1655529",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "52da02521ede55fb86546c3fffd9377b3261b91f",
                            "lessThan": "279853aec9f58d5cd723e6e5617c1c3337b30383",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "34a949e7a0869dfa31a40416d2a56973fae1807b",
                            "lessThan": "c65b1f60237daac7c56c2652e064cc566a45dc81",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d9ccb18f83ea2bb654289b6ecf014fd267cc988b",
                            "lessThan": "dc36a04621dcc2447dae428709207810b6c06e14",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d9ccb18f83ea2bb654289b6ecf014fd267cc988b",
                            "lessThan": "5e40de719ee76b8d96e2556ce36dbd3bd07bf37d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d9ccb18f83ea2bb654289b6ecf014fd267cc988b",
                            "lessThan": "9f72412bcf60144f252b0d6205106abf14344abc",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "11edcd026012ac18acee0f1514db3ed1b160fc6f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6.1.128",
                            "lessThan": "6.1.176",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.75",
                            "lessThan": "6.6.143",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.2",
                            "lessThan": "6.12.93",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.11.11",
                            "lessThan": "6.12",
                            "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/ipv6/route.c"
                    ],
                    "versions": [
                        {
                            "version": "6.13",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.13",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.176",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.143",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.93",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.35",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0.12",
                            "lessThanOrEqual": "7.0.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
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                            "operator": "OR",
                            "negate": false,
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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/b014a63d2f2c2c767762b548381882dfb1655529"
                },
                {
                    "url": "https://git.kernel.org/stable/c/279853aec9f58d5cd723e6e5617c1c3337b30383"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c65b1f60237daac7c56c2652e064cc566a45dc81"
                },
                {
                    "url": "https://git.kernel.org/stable/c/dc36a04621dcc2447dae428709207810b6c06e14"
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                {
                    "url": "https://git.kernel.org/stable/c/5e40de719ee76b8d96e2556ce36dbd3bd07bf37d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/9f72412bcf60144f252b0d6205106abf14344abc"
                }
            ],
            "title": "ipv6: fix possible infinite loop in rt6_fill_node()",
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