Vulnerability in Nbdkit Project
CVE-2025-47711
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.
EPSS: 0.004 (30.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Nbdkit_project Nbdkit
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 8 Advanced Virtualization
- Red Hat Enterprise Linux 9
- Red Hat In-vehicle Operating System 1
- Redhat Enterprise_linux — versions 7.0, 8.0, 9.0
- Redhat Enterprise_linux_advanced_virtualization — versions 8.0
Weakness classification (CWE)
References
- secalert@redhat.com (x_refsource_REDHAT, vdb-entry, Vendor Advisory)
- secalert@redhat.com (x_refsource_REDHAT, issue-tracking, Issue Tracking)
- secalert@redhat.com
Frequently asked questions
- What is CVE-2025-47711?
- CVE-2025-47711 is a medium-severity vulnerability in Nbdkit Project, classified under Off-by-one Error. CVSS score: 6.5/10. Published 2025-06-09.
- How severe is CVE-2025-47711?
- Medium severity. CVSS v3 base score is 6.5 out of 10.