CVE-2026-98504 (GCVE-0-2026-98504)

Vulnerability from cvelistv5 – Published: 2026-10-18 15:17 – Updated: 2026-10-19 09:20
VLAI
Title
PCI: of_property: Omit bus properties without a subordinate bus
Summary
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->subordinate), 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->subordinate without checking it. When CONFIG_PCI_DYNAMIC_OF_NODES is enabled, this can cause a NULL pointer dereference and early boot hang. Generate 'bus-range' and 'interrupt-map' properties only when a subordinate bus exists. Keep the node and its remaining properties for bridges without one. The problem was latent since 407d1a51921e ("PCI: Create device tree node for bridge"), but wasn't reachable until 1f340724419e ("PCI: of: Create device tree PCI host bridge node"), which appeared in v6.15. Before 1f340724419e, of_pci_make_dev_node() returned early because the parent OF node was missing. [bhelgaas: move pdev->subordinate test to callees, commit log]
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7018 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 407d1a51921e9f28c1bcec647c2205925bd1fdab , < ccd32fa3489cbe86a0b281da4447b4c7eadb3518 (git)
Affected: 407d1a51921e9f28c1bcec647c2205925bd1fdab , < a6d97d10e49ae49026ae13af6c41634fce470a37 (git)
Affected: 407d1a51921e9f28c1bcec647c2205925bd1fdab , < 879c911f77b8a7862aa16079b04efc3fdc5d32ec (git)
Affected: 407d1a51921e9f28c1bcec647c2205925bd1fdab , < aee774588abd78f75952fd34c3fa461bc46b62c2 (git)
Affected: 407d1a51921e9f28c1bcec647c2205925bd1fdab , < 8805840aad73df7146778be243a196d48b4f6430 (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.6
Unaffected: 0 , < 6.6 (semver)
Unaffected: 6.6.158 , ≤ 6.6.* (semver)
Unaffected: 6.12.112 , ≤ 6.12.* (semver)
Unaffected: 6.18.55 , ≤ 6.18.* (semver)
Unaffected: 7.2.9 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/pci/of_property.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "ccd32fa3489cbe86a0b281da4447b4c7eadb3518",
              "status": "affected",
              "version": "407d1a51921e9f28c1bcec647c2205925bd1fdab",
              "versionType": "git"
            },
            {
              "lessThan": "a6d97d10e49ae49026ae13af6c41634fce470a37",
              "status": "affected",
              "version": "407d1a51921e9f28c1bcec647c2205925bd1fdab",
              "versionType": "git"
            },
            {
              "lessThan": "879c911f77b8a7862aa16079b04efc3fdc5d32ec",
              "status": "affected",
              "version": "407d1a51921e9f28c1bcec647c2205925bd1fdab",
              "versionType": "git"
            },
            {
              "lessThan": "aee774588abd78f75952fd34c3fa461bc46b62c2",
              "status": "affected",
              "version": "407d1a51921e9f28c1bcec647c2205925bd1fdab",
              "versionType": "git"
            },
            {
              "lessThan": "8805840aad73df7146778be243a196d48b4f6430",
              "status": "affected",
              "version": "407d1a51921e9f28c1bcec647c2205925bd1fdab",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/pci/of_property.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.6"
            },
            {
              "lessThan": "6.6",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.158",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.112",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.55",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.9",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.158",
                  "versionStartIncluding": "6.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.112",
                  "versionStartIncluding": "6.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.55",
                  "versionStartIncluding": "6.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.9",
                  "versionStartIncluding": "6.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3",
                  "versionStartIncluding": "6.6",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: of_property: Omit bus properties without a subordinate bus\n\nA bridge (a device with a Type 1 header) may not have a secondary bus\nallocated (pdev-\u003esubordinate), e.g., if there are no available bus numbers\nor the bridge secondary/subordinate bus numbers are not writable.\n\nThe dynamic OF helpers of_pci_prop_bus_range() and of_pci_prop_intr_map()\ndereference pdev-\u003esubordinate without checking it.  When\nCONFIG_PCI_DYNAMIC_OF_NODES is enabled, this can cause a NULL pointer\ndereference and early boot hang.\n\nGenerate \u0027bus-range\u0027 and \u0027interrupt-map\u0027 properties only when a subordinate\nbus exists.  Keep the node and its remaining properties for bridges without\none.\n\nThe problem was latent since 407d1a51921e (\"PCI: Create device tree node\nfor bridge\"), but wasn\u0027t reachable until 1f340724419e (\"PCI: of: Create\ndevice tree PCI host bridge node\"), which appeared in v6.15.  Before\n1f340724419e, of_pci_make_dev_node() returned early because the parent OF\nnode was missing.\n\n[bhelgaas: move pdev-\u003esubordinate test to callees, commit log]"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:20:43.250Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ccd32fa3489cbe86a0b281da4447b4c7eadb3518"
        },
        {
          "url": "https://git.kernel.org/stable/c/a6d97d10e49ae49026ae13af6c41634fce470a37"
        },
        {
          "url": "https://git.kernel.org/stable/c/879c911f77b8a7862aa16079b04efc3fdc5d32ec"
        },
        {
          "url": "https://git.kernel.org/stable/c/aee774588abd78f75952fd34c3fa461bc46b62c2"
        },
        {
          "url": "https://git.kernel.org/stable/c/8805840aad73df7146778be243a196d48b4f6430"
        }
      ],
      "title": "PCI: of_property: Omit bus properties without a subordinate bus",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98504",
    "datePublished": "2026-10-18T15:17:05.274Z",
    "dateReserved": "2026-09-25T10:25:14.353Z",
    "dateUpdated": "2026-10-19T09:20:43.250Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-98504",
      "date": "2026-11-01",
      "epss": "0.00206",
      "percentile": "0.10587"
    },
    "microsoft_vex": {
      "current_release_date": "2026-10-28T01:45:48.000Z",
      "cve": "CVE-2026-98504",
      "id": "msrc_CVE-2026-98504",
      "initial_release_date": "2026-10-20T01:10:05.000Z",
      "product_status:known_not_affected": "1",
      "product_status:under_investigation": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "PCI: of_property: Omit bus properties without a subordinate bus",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-98504.json",
      "version": "5"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "drivers/pci/of_property.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "ccd32fa3489cbe86a0b281da4447b4c7eadb3518",
                    "status": "affected",
                    "version": "407d1a51921e9f28c1bcec647c2205925bd1fdab",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "a6d97d10e49ae49026ae13af6c41634fce470a37",
                    "status": "affected",
                    "version": "407d1a51921e9f28c1bcec647c2205925bd1fdab",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "879c911f77b8a7862aa16079b04efc3fdc5d32ec",
                    "status": "affected",
                    "version": "407d1a51921e9f28c1bcec647c2205925bd1fdab",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "aee774588abd78f75952fd34c3fa461bc46b62c2",
                    "status": "affected",
                    "version": "407d1a51921e9f28c1bcec647c2205925bd1fdab",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "8805840aad73df7146778be243a196d48b4f6430",
                    "status": "affected",
                    "version": "407d1a51921e9f28c1bcec647c2205925bd1fdab",
                    "versionType": "git"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "drivers/pci/of_property.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "6.6"
                  },
                  {
                    "lessThan": "6.6",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.6.*",
                    "status": "unaffected",
                    "version": "6.6.158",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.12.*",
                    "status": "unaffected",
                    "version": "6.12.112",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.18.*",
                    "status": "unaffected",
                    "version": "6.18.55",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "7.2.*",
                    "status": "unaffected",
                    "version": "7.2.9",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "7.3",
                    "versionType": "original_commit_for_fix"
                  }
                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: of_property: Omit bus properties without a subordinate bus\n\nA bridge (a device with a Type 1 header) may not have a secondary bus\nallocated (pdev-\u003esubordinate), e.g., if there are no available bus numbers\nor the bridge secondary/subordinate bus numbers are not writable.\n\nThe dynamic OF helpers of_pci_prop_bus_range() and of_pci_prop_intr_map()\ndereference pdev-\u003esubordinate without checking it.  When\nCONFIG_PCI_DYNAMIC_OF_NODES is enabled, this can cause a NULL pointer\ndereference and early boot hang.\n\nGenerate \u0027bus-range\u0027 and \u0027interrupt-map\u0027 properties only when a subordinate\nbus exists.  Keep the node and its remaining properties for bridges without\none.\n\nThe problem was latent since 407d1a51921e (\"PCI: Create device tree node\nfor bridge\"), but wasn\u0027t reachable until 1f340724419e (\"PCI: of: Create\ndevice tree PCI host bridge node\"), which appeared in v6.15.  Before\n1f340724419e, of_pci_make_dev_node() returned early because the parent OF\nnode was missing.\n\n[bhelgaas: move pdev-\u003esubordinate test to callees, commit log]"
          }
        ],
        "id": "CVE-2026-98504",
        "lastModified": "2026-10-19T10:19:03.637",
        "metrics": {},
        "published": "2026-10-18T16:17:01.493",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/879c911f77b8a7862aa16079b04efc3fdc5d32ec"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/8805840aad73df7146778be243a196d48b4f6430"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/a6d97d10e49ae49026ae13af6c41634fce470a37"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/aee774588abd78f75952fd34c3fa461bc46b62c2"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/ccd32fa3489cbe86a0b281da4447b4c7eadb3518"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-10-19T12:14:51+00:00",
      "cve": "CVE-2026-98504",
      "id": "CVE-2026-98504",
      "initial_release_date": "2026-10-18T00:00:00+00:00",
      "product_status:known_not_affected": "277",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: PCI: of_property: Omit bus properties without a subordinate bus",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98504.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON

Loading timeline…




    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.