{"cve":"CVE-2026-98504","nvd":{"published":"2026-10-18T16:17:01.493","modified":"2026-10-19T10:19:03.637","status":"Received","description":"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->subordinate), 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->subordinate without checking it.  When\nCONFIG_PCI_DYNAMIC_OF_NODES is enabled, this can cause a NULL pointer\ndereference and early boot hang.\n\nGenerate 'bus-range' and 'interrupt-map' 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't 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->subordinate test to callees, commit log]","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/879c911f77b8a7862aa16079b04efc3fdc5d32ec","https://git.kernel.org/stable/c/8805840aad73df7146778be243a196d48b4f6430","https://git.kernel.org/stable/c/a6d97d10e49ae49026ae13af6c41634fce470a37","https://git.kernel.org/stable/c/aee774588abd78f75952fd34c3fa461bc46b62c2","https://git.kernel.org/stable/c/ccd32fa3489cbe86a0b281da4447b4c7eadb3518"],"products":[],"source":"nvd","synced_at":"2026-10-19T23:00:53.604569364+00:00"},"epss":{"cve":"CVE-2026-98504","score":0.00206,"percentile":0.10458,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}