{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-53133", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.386Z", "datePublished": "2026-06-25T08:38:22.469Z", "dateUpdated": "2026-06-28T06:39:28.012Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-28T06:39:28.012Z"}, "descriptions": [{"lang": "en", "value": "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."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/infiniband/core/iter.c"], "versions": [{"version": "a808273a495c657e33281b181fd7fcc2bb28f662", "lessThan": "2ff4b7817e5b78070c30f5fb5e678e452a2628b3", "status": "affected", "versionType": "git"}, {"version": "a808273a495c657e33281b181fd7fcc2bb28f662", "lessThan": "dee2a49adeeb2a5e16a3fc858fa21b841c519802", "status": "affected", "versionType": "git"}, {"version": "a808273a495c657e33281b181fd7fcc2bb28f662", "lessThan": "cc644d5608e3b0dadc970bd6e6aa26b91ea07d0f", "status": "affected", "versionType": "git"}, {"version": "a808273a495c657e33281b181fd7fcc2bb28f662", "lessThan": "8fe0231adebe086c8a459c790944ac026cd99c6e", "status": 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{"bugzilla": {"description": "kernel: RDMA/umem: Fix truncation for block sizes >= 4G", "id": "2492755", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492755"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-681", "details": ["A flaw was found in the Linux kernel's RDMA/umem component. When the IOMMU (Input/Output Memory Management Unit) is used, a very large memory block can be split across multiple scatter-gather (SG) entries. During the reassembly of these split SG entries, an issue with truncation for block sizes greater than or equal to 4 gigabytes (4G) can lead to an overflow of 32-bit stack values. This results in the computation of incorrect DMA (Direct Memory Access) addresses, potentially causing data corruption or system instability."], "name": "CVE-2026-53133", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-06-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-53133\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-53133\nhttps://lore.kernel.org/linux-cve-announce/2026062542-CVE-2026-53133-de02@gregkh/T"], "threat_severity": "Moderate"}

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