{"id":"CVE-2026-74491","state":"PUBLISHED","title":"of/address: Fix NULL bus dereference in of_pci_range_parser_one()","description":"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.","publishedAt":"2026-08-15T12:27:20.759Z","updatedAt":"2026-08-17T05:20:26.733Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"64ee3cf096ac590e7da2ceac1c390546bff5e240","status":"affected","lessThan":"88752b811f72aa7a16de6dad4b25031d7308673e","versionType":"git"},{"version":"64ee3cf096ac590e7da2ceac1c390546bff5e240","status":"affected","lessThan":"eddd0159a8761a16a9d183676b03cf493417816e","versionType":"git"},{"version":"64ee3cf096ac590e7da2ceac1c390546bff5e240","status":"affected","lessThan":"bba13ad17b1a11b3f1ed9b3a5d556191d7755a59","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/of/address.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.13","versionType":"semver"},{"version":"6.18.44","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.8","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/of/address.c"]}],"references":["https://git.kernel.org/stable/c/88752b811f72aa7a16de6dad4b25031d7308673e","https://git.kernel.org/stable/c/eddd0159a8761a16a9d183676b03cf493417816e","https://git.kernel.org/stable/c/bba13ad17b1a11b3f1ed9b3a5d556191d7755a59"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/74xxx/CVE-2026-74491.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-74491","state":"PUBLISHED","datePublished":"2026-08-15T12:27:20.759Z","dateUpdated":"2026-08-17T05:20:26.733Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-15T05:44:03.906Z"},"containers":{"cna":{"title":"of/address: Fix NULL bus dereference in of_pci_range_parser_one()","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"64ee3cf096ac590e7da2ceac1c390546bff5e240","status":"affected","lessThan":"88752b811f72aa7a16de6dad4b25031d7308673e","versionType":"git"},{"version":"64ee3cf096ac590e7da2ceac1c390546bff5e240","status":"affected","lessThan":"eddd0159a8761a16a9d183676b03cf493417816e","versionType":"git"},{"version":"64ee3cf096ac590e7da2ceac1c390546bff5e240","status":"affected","lessThan":"bba13ad17b1a11b3f1ed9b3a5d556191d7755a59","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/of/address.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.13","versionType":"semver"},{"version":"6.18.44","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.8","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/of/address.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/88752b811f72aa7a16de6dad4b25031d7308673e"},{"url":"https://git.kernel.org/stable/c/eddd0159a8761a16a9d183676b03cf493417816e"},{"url":"https://git.kernel.org/stable/c/bba13ad17b1a11b3f1ed9b3a5d556191d7755a59"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-17T05:20:26.733Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"6.18.44"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"7.1.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}