{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "907eea486888cfe118c19759bbc4b8fca2e004df"
            },
            {
              "fixed": "dac2b0328495971c7b417fd0143e53643343936e"
            },
            {
              "fixed": "24b2c95a046e15c9504a6d672b6b0b252952493f"
            },
            {
              "fixed": "8a3b935b6b6037eefb36bd27a60793a008358e8d"
            },
            {
              "fixed": "7b112bd43f1172fb152e848570a957467008a5ae"
            },
            {
              "fixed": "4ac7d92a4698e34e614c254359665b9de1f65283"
            },
            {
              "fixed": "291fe0bafee78c95f9f2e7f579f17793fd5a1e5a"
            },
            {
              "fixed": "c97426ec649d99596d8969e1a052c16b14b7b485"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.12.0"
            },
            {
              "fixed": "5.15.224"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.191"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.160"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.113"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.57"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/99xxx/CVE-2026-99070.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: do not warn on route notification size race\n\nfib6_info_hw_flags_set() sizes the skb with rt6_nlmsg_size() and later\nfills it with rt6_fill_node().  With nexthop compatibility mode enabled,\na concurrent replacement can grow the group between these independent\nsnapshots.  rt6_fill_node() can then legitimately return -EMSGSIZE, so\nthe warning does not prove a sizing bug.\n\nRemove the warning.  The existing error path still frees the skb and\nreports the error to listeners.",
  "id": "CVE-2026-99070",
  "modified": "2026-11-01T02:30:21.075817170Z",
  "published": "2026-10-23T12:23:13.342Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/24b2c95a046e15c9504a6d672b6b0b252952493f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/291fe0bafee78c95f9f2e7f579f17793fd5a1e5a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4ac7d92a4698e34e614c254359665b9de1f65283"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7b112bd43f1172fb152e848570a957467008a5ae"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8a3b935b6b6037eefb36bd27a60793a008358e8d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c97426ec649d99596d8969e1a052c16b14b7b485"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dac2b0328495971c7b417fd0143e53643343936e"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/99xxx/CVE-2026-99070.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-99070"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.2",
  "summary": "ipv6: do not warn on route notification size race"
}