Vulnerability-Lookup

oesa-2025-1778

Vulnerability from osv_openeuler

Published

2025-07-11 11:08

Modified

2026-08-06 11:08

Summary

nbdkit security update

Details

NBD (Network Block Device) is a protocol for accessing Block Devices (hard disks and disk-like things) over a Network. nbdkit is a toolkit for creating NBD servers. The key features are: * Multithreaded NBD server written in C with good performance. * Minimal dependencies for the basic server. * Liberal license (BSD) allows nbdkit to be linked to proprietary libraries or included in proprietary code. * Well-documented, simple plugin API with a stable ABI guarantee. Lets you export “unconventional” block devices easily. * You can write plugins in C, Lua, Perl, Python, OCaml, Ruby, Rust, shell script or Tcl. * Filters can be stacked in front of plugins to transform the output.

Security Fix(es):

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.(CVE-2025-47711)

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.(CVE-2025-47712)

Severity

4.3 (Medium)


                    
                      CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2025-47711	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2025-47712	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "nbdkit-1.29.11-2.oe2203sp4.aarch64.rpm",
          "nbdkit-basic-filters-1.29.11-2.oe2203sp4.aarch64.rpm",
          "nbdkit-basic-plugins-1.29.11-2.oe2203sp4.aarch64.rpm",
          "nbdkit-debuginfo-1.29.11-2.oe2203sp4.aarch64.rpm",
          "nbdkit-debugsource-1.29.11-2.oe2203sp4.aarch64.rpm",
          "nbdkit-devel-1.29.11-2.oe2203sp4.aarch64.rpm",
          "nbdkit-guestfs-plugin-1.29.11-2.oe2203sp4.aarch64.rpm",
          "nbdkit-libvirt-plugin-1.29.11-2.oe2203sp4.aarch64.rpm",
          "nbdkit-ocaml-plugin-1.29.11-2.oe2203sp4.aarch64.rpm",
          "nbdkit-ocaml-plugin-devel-1.29.11-2.oe2203sp4.aarch64.rpm",
          "nbdkit-perl-plugin-1.29.11-2.oe2203sp4.aarch64.rpm",
          "nbdkit-plugins-1.29.11-2.oe2203sp4.aarch64.rpm",
          "nbdkit-python3-plugin-1.29.11-2.oe2203sp4.aarch64.rpm",
          "nbdkit-server-1.29.11-2.oe2203sp4.aarch64.rpm"
        ],
        "noarch": [
          "nbdkit-bash-completion-1.29.11-2.oe2203sp4.noarch.rpm",
          "nbdkit-help-1.29.11-2.oe2203sp4.noarch.rpm"
        ],
        "src": [
          "nbdkit-1.29.11-2.oe2203sp4.src.rpm"
        ],
        "x86_64": [
          "nbdkit-1.29.11-2.oe2203sp4.x86_64.rpm",
          "nbdkit-basic-filters-1.29.11-2.oe2203sp4.x86_64.rpm",
          "nbdkit-basic-plugins-1.29.11-2.oe2203sp4.x86_64.rpm",
          "nbdkit-debuginfo-1.29.11-2.oe2203sp4.x86_64.rpm",
          "nbdkit-debugsource-1.29.11-2.oe2203sp4.x86_64.rpm",
          "nbdkit-devel-1.29.11-2.oe2203sp4.x86_64.rpm",
          "nbdkit-guestfs-plugin-1.29.11-2.oe2203sp4.x86_64.rpm",
          "nbdkit-libvirt-plugin-1.29.11-2.oe2203sp4.x86_64.rpm",
          "nbdkit-ocaml-plugin-1.29.11-2.oe2203sp4.x86_64.rpm",
          "nbdkit-ocaml-plugin-devel-1.29.11-2.oe2203sp4.x86_64.rpm",
          "nbdkit-perl-plugin-1.29.11-2.oe2203sp4.x86_64.rpm",
          "nbdkit-plugins-1.29.11-2.oe2203sp4.x86_64.rpm",
          "nbdkit-python3-plugin-1.29.11-2.oe2203sp4.x86_64.rpm",
          "nbdkit-server-1.29.11-2.oe2203sp4.x86_64.rpm",
          "nbdkit-vddk-plugin-1.29.11-2.oe2203sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP4",
        "name": "nbdkit",
        "purl": "pkg:rpm/openEuler/nbdkit\u0026distro=openEuler-22.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.29.11-2.oe2203sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Medium"
  },
  "details": "NBD (Network Block Device) is a protocol for accessing Block Devices (hard disks and disk-like things) over a Network. nbdkit is a toolkit for creating NBD servers. The key features are:  * Multithreaded NBD server written in C with good performance.  * Minimal dependencies for the basic server.  * Liberal license (BSD) allows nbdkit to be linked to proprietary libraries or included in proprietary code.  * Well-documented, simple plugin API with a stable ABI guarantee. Lets you export \u201cunconventional\u201d    block devices easily.  * You can write plugins in C, Lua, Perl, Python, OCaml, Ruby, Rust, shell script or Tcl.  * Filters can be stacked in front of plugins to transform the output.\r\n\r\nSecurity Fix(es):\n\nThere\u0026apos;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.(CVE-2025-47711)\n\nA flaw exists in the nbdkit \u0026quot;blocksize\u0026quot; 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.(CVE-2025-47712)",
  "id": "OESA-2025-1778",
  "modified": "2026-08-06T11:08:51Z",
  "published": "2025-07-11T11:08:51Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-1778"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-47711"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-47712"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "nbdkit security update",
  "upstream": [
    "CVE-2025-47711",
    "CVE-2025-47712"
  ]
}

CVE-2025-47711 (GCVE-0-2025-47711)

Vulnerability from cvelistv5 – Published: 2025-06-09 06:03 – Updated: 2026-06-30 03:07

Title

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

Summary

Severity

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-06-09 18:19 UTC

CWE

CWE-193 - Off-by-one Error

Assigner

redhat redhat root

References

3 references

URL	Tags
https://access.redhat.com/security/cve/CVE-2025-47711	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2365687	issue-trackingx_refsource_REDHAT
https://lists.libguestfs.org/archives/list/guestf…

Impacted products

6 products

Vendor	Product	Version
		Affected: 1.11.10 , < 1.38.6 (semver) Affected: 1.40.0 , < 1.40.6 (semver) Affected: 1.42.0 , < 1.42.3 (semver)
Red Hat	Red Hat Enterprise Linux 10	cpe:/o:redhat:enterprise_linux:10
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 8 Advanced Virtualization	cpe:/a:redhat:advanced_virtualization:8::el8
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9

Date Public

2025-04-23 00:00

Show details on NVD website

JSON

To clipboard

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CVE-2025-47712 (GCVE-0-2025-47712)

Vulnerability from cvelistv5 – Published: 2025-06-09 05:58 – Updated: 2026-06-30 03:07

Title

Nbd: nbdkit: integer overflow triggers an assertion resulting in denial of service

Summary

Severity

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-06-09 18:23 UTC

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

redhat redhat root

References

3 references

URL	Tags
https://access.redhat.com/security/cve/CVE-2025-47712	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2365724	issue-trackingx_refsource_REDHAT
https://lists.libguestfs.org/archives/list/guestf…

Impacted products

6 products

Vendor	Product	Version
		Affected: 1.21.16 , < 1.38.6 (semver) Affected: 1.40.0 , < 1.40.6 (semver) Affected: 1.42.0 , < 1.42.3 (semver)
Red Hat	Red Hat Enterprise Linux 10	cpe:/o:redhat:enterprise_linux:10
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 8 Advanced Virtualization	cpe:/a:redhat:advanced_virtualization:8::el8
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9

Date Public

2025-04-23 00:00

Show details on NVD website

JSON

To clipboard

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        {
          "name": "RHBZ#2365724",
          "tags": [
            "issue-tracking",
            "x_refsource_REDHAT"
          ],
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2365724"
        },
        {
          "url": "https://lists.libguestfs.org/archives/list/guestfs@lists.libguestfs.org/thread/67E7AASHHADIY7VAD3FFW2I67LTWVWYF/"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2025-05-12T20:59:53.759Z",
          "value": "Reported to Red Hat."
        },
        {
          "lang": "en",
          "time": "2025-04-23T00:00:00.000Z",
          "value": "Made public."
        }
      ],
      "title": "Nbd: nbdkit: integer overflow triggers an assertion resulting in denial of service",
      "x_generator": {
        "engine": "cvelib 1.8.0"
      },
      "x_redhatCweChain": "CWE-190: Integer Overflow or Wraparound"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2025-47712",
    "datePublished": "2025-06-09T05:58:41.198Z",
    "dateReserved": "2025-05-07T21:08:45.449Z",
    "dateUpdated": "2026-06-30T03:07:14.334Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

oesa-2025-1778

Vulnerability from osv_openeuler

CVE-2025-47711 (GCVE-0-2025-47711)

CVE-2025-47712 (GCVE-0-2025-47712)

Tags

Sightings

Nomenclature

Related by attack behaviour