Riskcovery

CVE-2026-97421

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

State
Published
Severity
7.8 High
Published
Sep 24, 2026
Updated
Oct 3, 2026
Reserved
Sep 24, 2026

Read the record on cve.org

Description

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

Scores

CVSSScoreVectorSource
3.17.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • a40c20dabdf9045270767c75918feb67f0727c89 to before 3014da7587ce006cd08004fd6b257626b314e0a3Affected
  • a40c20dabdf9045270767c75918feb67f0727c89 to before ddccf6cc3861de2fe60986933bead79220e0d797Affected
  • a40c20dabdf9045270767c75918feb67f0727c89 to before e9bbb5f5349ef560ff6f0395564f04c3aa664559Affected
  • a40c20dabdf9045270767c75918feb67f0727c89 to before ae3cf7d2c4d506c5c91746321644e1a08d989e2aAffected
  • a40c20dabdf9045270767c75918feb67f0727c89 to before 5fc5b73109540809b094710fac44da81dd8a3ff8Affected
  • a40c20dabdf9045270767c75918feb67f0727c89 to before 09ea6837a0434fb4db99528a5055b6d822135dcfAffected
  • 85e40ba1c4a5246b35e91c2ed69d4680426904d7Affected
  • 59f07434b297e2268f5d5c567db5b09145245cf1Affected
  • 488229b7729d7becf4c39c5e74fb709fb35115c2Affected
  • 5.4.73 to before 5.5Affected
  • 5.8.17 to before 5.9Affected
  • 5.9.2 to before 5.10Affected
LinuxLinux
  • 5.10Affected
  • before 5.10Not affected
  • 5.15.222 through 5.15.*Not affected
  • 6.1.189 through 6.1.*Not affected
  • 6.6.158 through 6.6.*Not affected
  • 6.12.111 through 6.12.*Not affected
  • 6.18.53 through 6.18.*Not affected
  • 7.2 and laterNot affected

References

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