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  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89744.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndevice property: fix infinite loop in fwnode_for_each_child_node()\n\nWhen iterate over children of a fwnode that has a secondary fwnode,\nfwnode_get_next_child_node() can enter an infinite loop if the secondary\nfwnode has more than one child.\n\n                       Parent        Child\n      (Primary fwnode)   FWa:   {FWa1, FWa2, FWa3}\n    (Secondary fwnode)   FWb:   {FWb1, FWb2}\n\nIn this case:\n\n ┌─\u003e fwnode_get_next_child_node(FWa, FWa1)\n │    - fwnode_call_ptr_op(FWa, get_next_child_node, FWa1) returns FWa2\n │\n │   ...\n │\n │   fwnode_get_next_child_node(FWa, FWa3)\n │    - fwnode_call_ptr_op(FWa, get_next_child_node, FWa3) returns NULL\n │    - fwnode_call_ptr_op(FWb, get_next_child_node, FWa3) returns FWb1\n │\n │   fwnode_get_next_child_node(FWa, FWb1)\n │    - fwnode_call_ptr_op(FWa, get_next_child_node, FWb1) returns FWa1\n └────┘\n\nThis cause fwnode_for_each_child_node() to loop indefinitely, reapeatedly\noutput {FWa1, FWa2, FWa3, FWb1, FWa1, ...}.\n\nThe root cause is that when the current child (FWb1) belongs to the\nsecondary fwnode, calling get_next_child_node() on the parimary fwnode\nincorrectly returns the first child (FWa1) again instead of NULL.\n\nFix this by dynamically checking the parent fwnode of the current child\nbefore calling get_next_child_node(). This approach follows the pattern\nestablished in commit b5b41ab6b0c1 (\"device property: Check\nfwnode-\u003esecondary in fwnode_graph_get_next_endpoint()\").",
  "id": "CVE-2026-89744",
  "modified": "2026-09-16T03:30:52.881214680Z",
  "published": "2026-09-11T19:46:50.020Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/04004fa33730031392d987a9c1bbd8a0e1c4794b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1900692555826753adab8799a1a8d50bb1ee200c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/20ed517e416df89448029293304c9e180c26cd4b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9cb6b223ef02cb5c9777a852ae1ecf5796987eb6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ba69d892ff4e4a58cc12a2cae106b112db3306cc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f4ae79b5f00130aacaddb1f3eb2e5ef711fbf9e0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89744.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89744"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "device property: fix infinite loop in fwnode_for_each_child_node()"
}