{
  "affected": [
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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          "type": "GIT"
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            },
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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          "type": "GIT"
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      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.1.176"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
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              "introduced": "6.2.0"
            },
            {
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            }
          ],
          "type": "ECOSYSTEM"
        },
        {
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            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.93"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
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            },
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            }
          ],
          "type": "ECOSYSTEM"
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  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63969.json"
  },
  "details": "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(\u0026rt-\u003efib6_siblings)\nwithout waiting for RCU readers; rt-\u003efib6_siblings.next then still\npoints into the old ring and this softirq-side walker never reaches\n\u0026rt-\u003efib6_siblings, causing a CPU stall. fib6_del_route() always\nWRITE_ONCE()s rt-\u003efib6_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",
  "id": "CVE-2026-63969",
  "modified": "2026-07-21T03:42:03.248122487Z",
  "published": "2026-07-19T14:55:56.330Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/279853aec9f58d5cd723e6e5617c1c3337b30383"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5e40de719ee76b8d96e2556ce36dbd3bd07bf37d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9f72412bcf60144f252b0d6205106abf14344abc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b014a63d2f2c2c767762b548381882dfb1655529"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c65b1f60237daac7c56c2652e064cc566a45dc81"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dc36a04621dcc2447dae428709207810b6c06e14"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63969.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63969"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "summary": "ipv6: fix possible infinite loop in rt6_fill_node()"
}