{"api_version":"1","generated_at":"2026-06-25T19:22:10+00:00","cve":"CVE-2026-53133","urls":{"html":"https://cve.report/CVE-2026-53133","api":"https://cve.report/api/cve/CVE-2026-53133.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-53133","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-53133"},"summary":{"title":"RDMA/umem: Fix truncation for block sizes >= 4G","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/umem: Fix truncation for block sizes >= 4G\n\nWhen the iommu is used the linearization of the mapping can give a single\nblock that is very large split across multiple SG entries.\n\nWhen __rdma_block_iter_next() reassembles the split SG entries it is\noverflowing the 32 bit stack values and computed the wrong DMA addresses\nfor blocks after the truncation.\n\nUse the right types to hold DMA addresses.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-06-25 09:16:30","updated_at":"2026-06-25 09:16:30"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/2ff4b7817e5b78070c30f5fb5e678e452a2628b3","name":"https://git.kernel.org/stable/c/2ff4b7817e5b78070c30f5fb5e678e452a2628b3","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/dee2a49adeeb2a5e16a3fc858fa21b841c519802","name":"https://git.kernel.org/stable/c/dee2a49adeeb2a5e16a3fc858fa21b841c519802","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/baf8685bcf56dc1efb44b8f6a57c42516e549068","name":"https://git.kernel.org/stable/c/baf8685bcf56dc1efb44b8f6a57c42516e549068","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/cc644d5608e3b0dadc970bd6e6aa26b91ea07d0f","name":"https://git.kernel.org/stable/c/cc644d5608e3b0dadc970bd6e6aa26b91ea07d0f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/15fe76e23615f502d051ef0768f86babaf08746c","name":"https://git.kernel.org/stable/c/15fe76e23615f502d051ef0768f86babaf08746c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ac1aad8e1281534ce936c250f68084fc79c5469e","name":"https://git.kernel.org/stable/c/ac1aad8e1281534ce936c250f68084fc79c5469e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/afd35fec9297195b759078745549c2671223f24f","name":"https://git.kernel.org/stable/c/afd35fec9297195b759078745549c2671223f24f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/8fe0231adebe086c8a459c790944ac026cd99c6e","name":"https://git.kernel.org/stable/c/8fe0231adebe086c8a459c790944ac026cd99c6e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-53133","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53133","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a808273a495c657e33281b181fd7fcc2bb28f662 2ff4b7817e5b78070c30f5fb5e678e452a2628b3 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a808273a495c657e33281b181fd7fcc2bb28f662 dee2a49adeeb2a5e16a3fc858fa21b841c519802 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a808273a495c657e33281b181fd7fcc2bb28f662 cc644d5608e3b0dadc970bd6e6aa26b91ea07d0f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a808273a495c657e33281b181fd7fcc2bb28f662 8fe0231adebe086c8a459c790944ac026cd99c6e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/umem: Fix truncation for block sizes >= 4G\n\nWhen the iommu is used the linearization of the mapping can give a single\nblock that is very large split across multiple SG entries.\n\nWhen __rdma_block_iter_next() reassembles the split SG entries it is\noverflowing the 32 bit stack values and computed the wrong DMA addresses\nfor blocks after the truncation.\n\nUse the right types to hold DMA addresses."}],"providerMetadata":{"dateUpdated":"2026-06-25T08:38:22.469Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/2ff4b7817e5b78070c30f5fb5e678e452a2628b3"},{"url":"https://git.kernel.org/stable/c/dee2a49adeeb2a5e16a3fc858fa21b841c519802"},{"url":"https://git.kernel.org/stable/c/cc644d5608e3b0dadc970bd6e6aa26b91ea07d0f"},{"url":"https://git.kernel.org/stable/c/8fe0231adebe086c8a459c790944ac026cd99c6e"},{"url":"https://git.kernel.org/stable/c/baf8685bcf56dc1efb44b8f6a57c42516e549068"},{"url":"https://git.kernel.org/stable/c/afd35fec9297195b759078745549c2671223f24f"},{"url":"https://git.kernel.org/stable/c/ac1aad8e1281534ce936c250f68084fc79c5469e"},{"url":"https://git.kernel.org/stable/c/15fe76e23615f502d051ef0768f86babaf08746c"}],"title":"RDMA/umem: Fix truncation for block sizes >= 4G","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-53133","datePublished":"2026-06-25T08:38:22.469Z","dateReserved":"2026-06-09T07:44:35.386Z","dateUpdated":"2026-06-25T08:38:22.469Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-06-25 09:16:30","lastModifiedDate":"2026-06-25 09:16:30","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"53133","Ordinal":"1","Title":"RDMA/umem: Fix truncation for block sizes >= 4G","CVE":"CVE-2026-53133","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"53133","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/umem: Fix truncation for block sizes >= 4G\n\nWhen the iommu is used the linearization of the mapping can give a single\nblock that is very large split across multiple SG entries.\n\nWhen __rdma_block_iter_next() reassembles the split SG entries it is\noverflowing the 32 bit stack values and computed the wrong DMA addresses\nfor blocks after the truncation.\n\nUse the right types to hold DMA addresses.","Type":"Description","Title":"RDMA/umem: Fix truncation for block sizes >= 4G"}]}}}