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CVE-2026-53133

RDMA/umem: Fix truncation for block sizes >= 4G PUBLISHED

Description (CNA)

In the Linux kernel, the following vulnerability has been resolved: RDMA/umem: Fix truncation for block sizes >= 4G When the iommu is used the linearization of the mapping can give a single block that is very large split across multiple SG entries. When __rdma_block_iter_next() reassembles the split SG entries it is overflowing the 32 bit stack values and computed the wrong DMA addresses for blocks after the truncation. Use the right types to hold DMA addresses.

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected a808273a495c657e33281b181fd7fcc2bb28f662 before 2ff4b7817e5b78070c30f5fb5e678e452a2628b3; affected a808273a495c657e33281b181fd7fcc2bb28f662 before dee2a49adeeb2a5e16a3fc858fa21b841c519802; affected a808273a495c657e33281b181fd7fcc2bb28f662 before cc644d5608e3b0dadc970bd6e6aa26b91ea07d0f; affected a808273a495c657e33281b181fd7fcc2bb28f662 before 8fe0231adebe086c8a459c790944ac026cd99c6e; affected a808273a495c657e33281b181fd7fcc2bb28f662 before baf8685bcf56dc1efb44b8f6a57c42516e549068; affected a808273a495c657e33281b181fd7fcc2bb28f662 before afd35fec9297195b759078745549c2671223f24f; affected a808273a495c657e33281b181fd7fcc2bb28f662 before ac1aad8e1281534ce936c250f68084fc79c5469e; affected a808273a495c657e33281b181fd7fcc2bb28f662 before 15fe76e23615f502d051ef0768f86babaf08746c
Linux / Linuxaffected 5.2; unaffected 0 before 5.2; unaffected 5.10.259 through 5.10.*; unaffected 5.15.210 through 5.15.*; unaffected 6.1.176 through 6.1.*; unaffected 6.6.143 through 6.6.*; unaffected 6.12.94 through 6.12.*; unaffected 6.18.36 through 6.18.*; unaffected 7.0.13 through 7.0.*; unaffected 7.1 through *

CWE

No CWE identifiers supplied.

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.