{"id":"CVE-2026-53133","revision":null,"records":[{"revision":"d28285a63f034e3dacf21ce28d2b1ccb","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-53133","aliases":[],"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":0,"publishedAt":"2026-06-25T08:38:22.469+00:00","modifiedAt":"2026-10-19T19:57:25.374+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/infiniband/core/iter.c\"\n ],\n \"versions\": [\n {\n \"version\": \"a808273a495c657e33281b181fd7fcc2bb28f662\",\n \"lessThan\": \"2ff4b7817e5b78070c30f5fb5e678e452a2628b3\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"a808273a495c657e33281b181fd7fcc2bb28f662\",\n \"lessThan\": \"dee2a49adeeb2a5e16a3fc858fa21b841c519802\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"a808273a495c657e33281b181fd7fcc2bb28f662\",\n \"lessThan\": \"cc644d5608e3b0dadc970bd6e6aa26b91ea07d0f\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"a808273a495c657e33281b181fd7fcc2bb28f662\",\n \"lessThan\": \"8fe0231adebe086c8a459c790944ac026cd99c6e\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"a808273a495c657e33281b181fd7fcc2bb28f662\",\n \"lessThan\": \"baf8685bcf56dc1efb44b8f6a57c42516e549068\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"a808273a495c657e33281b181fd7fcc2bb28f662\",\n \"lessThan\": \"afd35fec9297195b759078745549c2671223f24f\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"a808273a495c657e33281b181fd7fcc2bb28f662\",\n \"lessThan\": \"ac1aad8e1281534ce936c250f68084fc79c5469e\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"a808273a495c657e33281b181fd7fcc2bb28f662\",\n \"lessThan\": \"15fe76e23615f502d051ef0768f86babaf08746c\",\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/infiniband/core/iter.c\"\n ],\n \"versions\": [\n {\n \"version\": \"5.2\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"5.2\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.259\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.210\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.176\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.143\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.94\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.36\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.0.13\",\n \"lessThanOrEqual\": \"7.0.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.1\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/2ff4b7817e5b78070c30f5fb5e678e452a2628b3","https://git.kernel.org/stable/c/dee2a49adeeb2a5e16a3fc858fa21b841c519802","https://git.kernel.org/stable/c/cc644d5608e3b0dadc970bd6e6aa26b91ea07d0f","https://git.kernel.org/stable/c/8fe0231adebe086c8a459c790944ac026cd99c6e","https://git.kernel.org/stable/c/baf8685bcf56dc1efb44b8f6a57c42516e549068","https://git.kernel.org/stable/c/afd35fec9297195b759078745549c2671223f24f","https://git.kernel.org/stable/c/ac1aad8e1281534ce936c250f68084fc79c5469e","https://git.kernel.org/stable/c/15fe76e23615f502d051ef0768f86babaf08746c"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-53133","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-53133","identifiers":["CVE-2026-53133"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all 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