{"schema":"threatline.record/2","record":{"id":"CVE-2026-98504","aliases":[],"summary":"PCI: of_property: Omit bus properties without a subordinate bus","details":"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]","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98504","source_modified_at":"2026-10-19T09:20:43.250Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"407d1a51921e9f28c1bcec647c2205925bd1fdab","lessThan":"ccd32fa3489cbe86a0b281da4447b4c7eadb3518","status":"affected","versionType":"git"},{"version":"407d1a51921e9f28c1bcec647c2205925bd1fdab","lessThan":"a6d97d10e49ae49026ae13af6c41634fce470a37","status":"affected","versionType":"git"},{"version":"407d1a51921e9f28c1bcec647c2205925bd1fdab","lessThan":"879c911f77b8a7862aa16079b04efc3fdc5d32ec","status":"affected","versionType":"git"},{"version":"407d1a51921e9f28c1bcec647c2205925bd1fdab","lessThan":"aee774588abd78f75952fd34c3fa461bc46b62c2","status":"affected","versionType":"git"},{"version":"407d1a51921e9f28c1bcec647c2205925bd1fdab","lessThan":"8805840aad73df7146778be243a196d48b4f6430","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98504","source_modified_at":"2026-10-19T09:20:43.250Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"6.6","status":"affected"},{"version":"0","lessThan":"6.6","status":"unaffected","versionType":"semver"},{"version":"6.6.158","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.112","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.55","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.9","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}],"defaultStatus":"affected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98504","source_modified_at":"2026-10-19T09:20:43.250Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"879c911f77b8a7862aa16079b04efc3fdc5d32ec","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98504","source_modified_at":"2026-10-19T09:20:43.250Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"8805840aad73df7146778be243a196d48b4f6430","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.002,"percentile":0.09332,"score_date":"2026-10-23"},"published_at":"2026-10-18T15:17:05.274Z","modified_at":"2026-10-19T09:20:43.250Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-98504","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-19T09:20:43.250Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-98504","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://git.kernel.org/stable/c/ccd32fa3489cbe86a0b281da4447b4c7eadb3518"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/a6d97d10e49ae49026ae13af6c41634fce470a37"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/879c911f77b8a7862aa16079b04efc3fdc5d32ec"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/aee774588abd78f75952fd34c3fa461bc46b62c2"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/8805840aad73df7146778be243a196d48b4f6430"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-19T09:20:43.250Z","content_hash":"6878fbe1e27a1eb7a4280e7f688a3929537ebcc6658ca9d6a95e41c03b5e1f8f"}}