{"cve":"CVE-2026-53133","nvd":{"published":"2026-06-25T09:16:30.537","modified":"2026-10-19T20:19:05.130","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"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},"cwes":["CWE-681","CWE-190"],"references":["https://git.kernel.org/stable/c/15fe76e23615f502d051ef0768f86babaf08746c","https://git.kernel.org/stable/c/2ff4b7817e5b78070c30f5fb5e678e452a2628b3","https://git.kernel.org/stable/c/8fe0231adebe086c8a459c790944ac026cd99c6e","https://git.kernel.org/stable/c/ac1aad8e1281534ce936c250f68084fc79c5469e","https://git.kernel.org/stable/c/afd35fec9297195b759078745549c2671223f24f"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-21T03:43:09.190223697+00:00"},"epss":{"cve":"CVE-2026-53133","score":0.0013,"percentile":0.02582,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}