Description
A flaw exists in the nbdkit "blocksize" filter that can be triggered by a specific type of client request. When a client requests block status information for a very large data range, exceeding a certain limit, it causes an internal error in the nbdkit, leading to a denial of service.
Published: 2025-06-09
Score: 6.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2025-17436 A flaw exists in the nbdkit "blocksize" filter that can be triggered by a specific type of client request. When a client requests block status information for a very large data range, exceeding a certain limit, it causes an internal error in the nbdkit, leading to a denial of service.
History

Thu, 08 Jan 2026 03:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L'}

cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}


Wed, 08 Oct 2025 16:15:00 +0000

Type Values Removed Values Added
CPEs cpe:/o:redhat:rhivos:1
Vendors & Products Redhat rhivos

Wed, 01 Oct 2025 01:15:00 +0000

Type Values Removed Values Added
First Time appeared Redhat rhivos
CPEs cpe:/o:redhat:rhivos:1
Vendors & Products Redhat rhivos

Thu, 21 Aug 2025 01:30:00 +0000

Type Values Removed Values Added
First Time appeared Nbdkit Project
Nbdkit Project nbdkit
Redhat enterprise Linux Advanced Virtualization
CPEs cpe:2.3:a:nbdkit_project:nbdkit:-:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_advanced_virtualization:8.0:*:*:*:*:*:*:*
Vendors & Products Nbdkit Project
Nbdkit Project nbdkit
Redhat enterprise Linux Advanced Virtualization

Tue, 29 Jul 2025 18:30:00 +0000


Fri, 11 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00043}

epss

{'score': 0.00049}


Mon, 09 Jun 2025 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 09 Jun 2025 06:15:00 +0000

Type Values Removed Values Added
Description No description is available for this CVE. A flaw exists in the nbdkit "blocksize" filter that can be triggered by a specific type of client request. When a client requests block status information for a very large data range, exceeding a certain limit, it causes an internal error in the nbdkit, leading to a denial of service.
Title nbd: nbdkit: Integer overflow triggers an assertion resulting in Denial of Service Nbd: nbdkit: integer overflow triggers an assertion resulting in denial of service
First Time appeared Redhat
Redhat advanced Virtualization
Redhat enterprise Linux
CPEs cpe:/a:redhat:advanced_virtualization:8::el8
cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat advanced Virtualization
Redhat enterprise Linux
References

Tue, 13 May 2025 04:45:00 +0000

Type Values Removed Values Added
Description No description is available for this CVE.
Title nbd: nbdkit: Integer overflow triggers an assertion resulting in Denial of Service
Weaknesses CWE-190
References
Metrics threat_severity

None

cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L'}

threat_severity

Moderate


Subscriptions

Nbdkit Project Nbdkit
Redhat Advanced Virtualization Enterprise Linux Enterprise Linux Advanced Virtualization
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-01-08T03:36:45.149Z

Reserved: 2025-05-07T21:08:45.449Z

Link: CVE-2025-47712

cve-icon Vulnrichment

Updated: 2025-06-09T18:23:53.127Z

cve-icon NVD

Status : Modified

Published: 2025-06-09T06:15:25.537

Modified: 2026-01-08T04:15:54.153

Link: CVE-2025-47712

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-04-23T00:00:00Z

Links: CVE-2025-47712 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses