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CVE-2026-97421

RDMA/umem: Be careful about boundary conditions in ib_umem_find_best_pgsz()

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.5, 5.9, 5.10, 5.15.222, 6.1.189, and 3 more
None on Exploit-DB, Metasploit or GitHub

Summary

In the Linux kernel, the following vulnerability has been resolved: RDMA/umem: Be careful about boundary conditions in ib_umem_find_best_pgsz() Several corner cases, especially important on 32 bits: • umem->iova is u64, the function argument should pass in u64 or iova will be truncated • Check that the length is not too large for the iova • Check that lengths > 4G don't overflow the GENMASK

Timeline

  1. CVE published
  2. Record last updated

Affected versions

  • Linux Linux

    From a40c20dabdf9045270767c75918feb67f0727c89 · fixed in 3014da7587ce006cd08004fd6b257626b314e0a3; From a40c20dabdf9045270767c75918feb67f0727c89 · fixed in ddccf6cc3861de2fe60986933bead79220e0d797; From a40c20dabdf9045270767c75918feb67f0727c89 · fixed in e9bbb5f5349ef560ff6f0395564f04c3aa664559; From a40c20dabdf9045270767c75918feb67f0727c89 · fixed in ae3cf7d2c4d506c5c91746321644e1a08d989e2a; From a40c20dabdf9045270767c75918feb67f0727c89 · fixed in 5fc5b73109540809b094710fac44da81dd8a3ff8; From a40c20dabdf9045270767c75918feb67f0727c89 · fixed in 09ea6837a0434fb4db99528a5055b6d822135dcf; From 5.4.73 · fixed in 5.5; From 5.8.17 · fixed in 5.9; From 5.9.2 · fixed in 5.10

  • Linux Linux

    5.10

  • KernelLinux

    From 5.10.0 · fixed in 5.15.222; From 5.16.0 · fixed in 6.1.189; From 6.2.0 · fixed in 6.6.158; From 6.7.0 · fixed in 6.12.111; From 6.13.0 · fixed in 6.18.53

References 6

git.kernel.org