Riskcovery

CVE-2025-47711

Nbdkit: nbdkit-server: off-by-one error when processing block status may lead to a denial of service

State
Published
Severity
6.5 Medium
Published
Jun 9, 2025
Updated
Jun 30, 2026
Reserved
May 7, 2025

Read the record on cve.org

Description

There's a flaw in the nbdkit server when handling responses from its plugins regarding the status of data blocks. If a client makes a specific request for a very large data range, and a plugin responds with an even larger single block, the nbdkit server can encounter a critical internal error, leading to a denial-of-service.

Scores

CVSSScoreVectorSource
3.16.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hredhat

Weaknesses

Affected Products

ProductVersions
nbdkit
  • 1.11.10 to before 1.38.6Affected
  • 1.40.0 to before 1.40.6Affected
  • 1.42.0 to before 1.42.3Affected
Red Hat Enterprise Linux 10Red Hat
    Red Hat Enterprise Linux 7Red Hat
      Red Hat Enterprise Linux 8Red Hat
        Red Hat Enterprise Linux 8 Advanced VirtualizationRed Hat
          Red Hat Enterprise Linux 8 Advanced VirtualizationRed Hat
            Red Hat Enterprise Linux 9Red Hat

              References

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