{
  "cveId": "CVE-2026-98504",
  "url": "https://patchblox.com/security/cve/CVE-2026-98504",
  "summary": "CVE-2026-98504 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-98504, released October 19, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "PCI: of_property: Omit bus properties without a subordinate bus",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  PCI: of_property: Omit bus properties without a subordinate bus  A bridge (a device with a Type 1 header) may not have a secondary bus allocated (pdev-\u003Esubordinate), e.g., if there are no available bus numbers or the bridge secondary/subordinate bus numbers are not writable.  The dynamic OF helpers of_pci_prop_bus_range() and of_pci_prop_intr_map() dereference pdev-\u003Esubordinate without checking it.  When CONFIG_PCI_DYNAMIC_OF_NODES is enabled, this can cause a NULL pointer dereference and early boot hang.  Generate \u0027bus-range\u0027 and \u0027interrupt-map\u0027 properties only when a subordinate bus exists.  Keep the node and its remaining properties for bridges without one.  The problem was latent since 407d1a51921e (\u0022PCI: Create device tree node for bridge\u0022), but wasn\u0027t reachable until 1f340724419e (\u0022PCI: of: Create device tree PCI host bridge node\u0022), which appeared in v6.15.  Before 1f340724419e, of_pci_make_dev_node() returned early because the parent OF node was missing.  [bhelgaas: move pdev-\u003Esubordinate test to callees, commit log]",
  "published": "2026-10-18T16:17:01Z",
  "severity": "Moderate",
  "cvss": 4.1,
  "epss": 0.00206,
  "epssPercentile": 0.1063,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-98504",
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.113-1",
      "fix": "DEBIAN-CVE-2026-98504",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-98504",
      "released": "2026-10-19T16:27:52Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.9-1",
      "fix": "DEBIAN-CVE-2026-98504",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-98504",
      "released": "2026-10-19T16:27:52Z"
    },
    {
      "platform": "linux",
      "product": "linux-6.12",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.12.113-1~deb12u1",
      "fix": "DEBIAN-CVE-2026-98504",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-98504",
      "released": "2026-10-19T16:27:52Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}