{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "ab427db17885814069bae891834f20842f0ac3a4"
            },
            {
              "fixed": "d8eb177632dacda28bc6130c2105afbf5b791eb0"
            },
            {
              "fixed": "150dba2c69e93302af24a0c868eebe4871e2e107"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98278.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: remove WARN_ON_ONCE() from the dev_fill_forward_path() loop check\n\nipip_fill_forward_path() and ip6_tnl_fill_forward_path() look up the\nroute to the tunnel's remote endpoint and set ctx-\u003edev to its device,\nwhich is the tunnel itself when that route resolves back to the tunnel.\ndev_fill_forward_path() then makes no progress and trips\nWARN_ON_ONCE(last_dev == ctx-\u003edev) as soon as a flowtable tries to\noffload a flow through the tunnel. That routing loop is a configuration\nany CAP_NET_ADMIN user can set up, and ip_tunnel_xmit() and\nip6_tnl_xmit() already treat it as a tx error, so remove the warning and\njust fail the walk, as commit 008e7a7c293b (\"net: remove WARN_ON_ONCE\nwhen accessing forward path array\") did for the path stack overflow.",
  "id": "CVE-2026-98278",
  "modified": "2026-10-08T02:30:35.657163663Z",
  "published": "2026-10-06T08:45:38.346Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/150dba2c69e93302af24a0c868eebe4871e2e107"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d8eb177632dacda28bc6130c2105afbf5b791eb0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98278.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98278"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "net: remove WARN_ON_ONCE() from the dev_fill_forward_path() loop check"
}