{"id":"CVE-2026-98504","revision":"295a925dcada4be8a532d04b7e680ea7","records":[{"revision":"295a925dcada4be8a532d04b7e680ea7","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-98504","aliases":[],"title":"PCI: of_property: Omit bus properties without a subordinate bus","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]","state":0,"publishedAt":"2026-10-18T15:17:05.274+00:00","modifiedAt":"2026-10-19T09:20:43.25+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/pci/of_property.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"407d1a51921e9f28c1bcec647c2205925bd1fdab\",\n                            \"lessThan\": \"ccd32fa3489cbe86a0b281da4447b4c7eadb3518\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"407d1a51921e9f28c1bcec647c2205925bd1fdab\",\n                            \"lessThan\": \"a6d97d10e49ae49026ae13af6c41634fce470a37\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"407d1a51921e9f28c1bcec647c2205925bd1fdab\",\n                            \"lessThan\": \"879c911f77b8a7862aa16079b04efc3fdc5d32ec\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"407d1a51921e9f28c1bcec647c2205925bd1fdab\",\n                            \"lessThan\": \"aee774588abd78f75952fd34c3fa461bc46b62c2\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"407d1a51921e9f28c1bcec647c2205925bd1fdab\",\n                            \"lessThan\": \"8805840aad73df7146778be243a196d48b4f6430\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/pci/of_property.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.6\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.6\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.158\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.112\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.55\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.9\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/ccd32fa3489cbe86a0b281da4447b4c7eadb3518","https://git.kernel.org/stable/c/a6d97d10e49ae49026ae13af6c41634fce470a37","https://git.kernel.org/stable/c/879c911f77b8a7862aa16079b04efc3fdc5d32ec","https://git.kernel.org/stable/c/aee774588abd78f75952fd34c3fa461bc46b62c2","https://git.kernel.org/stable/c/8805840aad73df7146778be243a196d48b4f6430"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98504","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-98504","identifiers":["CVE-2026-98504"]},"retained":false,"historicalAffected":[]}],"coverage":[]}