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CVE-2026-53133

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

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.10.259, 5.15.210, 6.1.176, 6.6.143, 6.12.94, and 2 more
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: total

Summary

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.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: total

  3. Record last updated

Affected versions

  • Linux Linux

    From a808273a495c657e33281b181fd7fcc2bb28f662 · fixed in 2ff4b7817e5b78070c30f5fb5e678e452a2628b3; From a808273a495c657e33281b181fd7fcc2bb28f662 · fixed in dee2a49adeeb2a5e16a3fc858fa21b841c519802; From a808273a495c657e33281b181fd7fcc2bb28f662 · fixed in cc644d5608e3b0dadc970bd6e6aa26b91ea07d0f; From a808273a495c657e33281b181fd7fcc2bb28f662 · fixed in 8fe0231adebe086c8a459c790944ac026cd99c6e; From a808273a495c657e33281b181fd7fcc2bb28f662 · fixed in baf8685bcf56dc1efb44b8f6a57c42516e549068; From a808273a495c657e33281b181fd7fcc2bb28f662 · fixed in afd35fec9297195b759078745549c2671223f24f; From a808273a495c657e33281b181fd7fcc2bb28f662 · fixed in ac1aad8e1281534ce936c250f68084fc79c5469e; From a808273a495c657e33281b181fd7fcc2bb28f662 · fixed in 15fe76e23615f502d051ef0768f86babaf08746c

  • Linux Linux

    5.2

  • KernelLinux

    From 5.2.0 · fixed in 5.10.259; From 5.11.0 · fixed in 5.15.210; From 5.16.0 · fixed in 6.1.176; From 6.2.0 · fixed in 6.6.143; From 6.7.0 · fixed in 6.12.94; From 6.13.0 · fixed in 6.18.36; From 6.19.0 · fixed in 7.0.13

References 8

git.kernel.org