{"id":"CVE-2026-74491","summary":"of/address: Fix NULL bus dereference in of_pci_range_parser_one()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nof/address: Fix NULL bus dereference in of_pci_range_parser_one()\n\nThe bus matching rework made of_match_bus() return NULL for nodes with\nranges/dma-ranges but no local #address-cells. parser_init() stored that\nNULL bus, and the range iterator later dereferenced it.\n\nReject such nodes in parser_init(), leaving an explicit empty\niterator for callers that ignore the init return, and make\nof_dma_get_max_cpu_address() honour the init failure so a rejected node\ncannot clamp the DMA limit.","modified":"2026-08-17T03:47:34.715609958Z","published":"2026-08-15T12:27:20.759Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74491.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/88752b811f72aa7a16de6dad4b25031d7308673e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/bba13ad17b1a11b3f1ed9b3a5d556191d7755a59"},{"type":"WEB","url":"https://git.kernel.org/stable/c/eddd0159a8761a16a9d183676b03cf493417816e"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74491.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74491"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"64ee3cf096ac590e7da2ceac1c390546bff5e240"},{"fixed":"88752b811f72aa7a16de6dad4b25031d7308673e"},{"fixed":"eddd0159a8761a16a9d183676b03cf493417816e"},{"fixed":"bba13ad17b1a11b3f1ed9b3a5d556191d7755a59"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74491.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.44"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.8"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74491.json"}}],"schema_version":"1.9.0"}