CVE-2025-47711: Nbdkit Project Nbdkit

Medium severity, CVSS 6.5. EPSS: 0.5% chance of exploitation in the next 30 days.

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.

Affected products

• Nbdkit Project Nbdkit: affected versions not specified
• Red Hat Enterprise Linux: version 7.0 only; version 8.0 only; version 9.0 only; version 10.0 only
• Red Hat Enterprise Linux Advanced Virtualization: version 8.0 only

Published 2025-06-09. Last modified 2026-06-30.