Vulnerability-Lookup

OESA-2026-2742 (CVE-2026-23679)

Vulnerability from osv_openeuler – Published: 2026-06-24 11:11 – Updated: 2026-08-06 11:11 – Source website

Summary

libusbx security update

Details

libusb is a library for USB device access from Linux, macOS, Windows, OpenBSD/NetBSD and Haiku userspace. It is written in C (Haiku backend in C++) and licensed under the GNU Lesser General Public License version 2.1 or, at your option, any later version (see COPYING).

Security Fix(es):

libusb before version 1.0.30 contains a NULL pointer dereference vulnerability that allows attackers to crash applications by supplying a malformed USB configuration descriptor where an interface claims bNumEndpoints greater than zero but is followed by a class-specific descriptor whose bLength exceeds the remaining buffer size, causing parse_interface() to return early without allocating the endpoint array. Attackers can exploit this flaw through libusb_get_active_config_descriptor or libusb_get_config_descriptor by providing crafted descriptors via virtualized USB passthrough, file-based descriptor parsing, or network sources, causing any application iterating over endpoints to dereference a NULL endpoint pointer and crash.(CVE-2026-23679)

Severity

5.5 (Medium)


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

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-23679	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "libusbx-1.0.26-3.oe2403sp1.aarch64.rpm",
          "libusbx-debuginfo-1.0.26-3.oe2403sp1.aarch64.rpm",
          "libusbx-debugsource-1.0.26-3.oe2403sp1.aarch64.rpm",
          "libusbx-devel-1.0.26-3.oe2403sp1.aarch64.rpm"
        ],
        "src": [
          "libusbx-1.0.26-3.oe2403sp1.src.rpm"
        ],
        "x86_64": [
          "libusbx-1.0.26-3.oe2403sp1.x86_64.rpm",
          "libusbx-debuginfo-1.0.26-3.oe2403sp1.x86_64.rpm",
          "libusbx-debugsource-1.0.26-3.oe2403sp1.x86_64.rpm",
          "libusbx-devel-1.0.26-3.oe2403sp1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP1",
        "name": "libusbx",
        "purl": "pkg:rpm/openEuler/libusbx\u0026distro=openEuler-24.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.0.26-3.oe2403sp1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Medium"
  },
  "details": "libusb is a library for USB device access from Linux, macOS, Windows, OpenBSD/NetBSD and Haiku userspace. It is written in C (Haiku backend in C++) and licensed under the GNU Lesser General Public License version 2.1 or, at your option, any later version (see COPYING).\r\n\r\nSecurity Fix(es):\n\nlibusb before version 1.0.30 contains a NULL pointer dereference vulnerability that allows attackers to crash applications by supplying a malformed USB configuration descriptor where an interface claims bNumEndpoints greater than zero but is followed by a class-specific descriptor whose bLength exceeds the remaining buffer size, causing parse_interface() to return early without allocating the endpoint array. Attackers can exploit this flaw through libusb_get_active_config_descriptor or libusb_get_config_descriptor by providing crafted descriptors via virtualized USB passthrough, file-based descriptor parsing, or network sources, causing any application iterating over endpoints to dereference a NULL endpoint pointer and crash.(CVE-2026-23679)",
  "id": "OESA-2026-2742",
  "modified": "2026-08-06T11:11:40Z",
  "published": "2026-06-24T11:11:40Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-2742"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23679"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "libusbx security update",
  "upstream": [
    "CVE-2026-23679"
  ]
}

CVE-2026-23679 (GCVE-0-2026-23679)

Vulnerability from cvelistv5 – Published: 2026-05-27 13:21 – Updated: 2026-07-14 15:53 X_Open Source

Title

libusb < 1.0.30 NULL Pointer Dereference in parse_interface()

Summary

Severity

6.9 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

6.2 (Medium)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-28 15:44 UTC

CWE

CWE-125 - Out-of-bounds Read

Assigner

VulnCheck mitre root

References

5 references

URL	Tags
https://github.com/libusb/libusb/releases/tag/v1.0.30	release-notes
https://github.com/libusb/libusb/issues/1813	issue-tracking
https://github.com/libusb/libusb/pull/1814	issue-tracking
https://github.com/libusb/libusb/commit/578ab76b4…	patch
https://www.vulncheck.com/advisories/libusb-null-…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
libusb	libusb	Affected: 0 , < 1.0.30 (semver) cpe:2.3:a:libusb:libusb::::::::

Date Public

2026-04-25 00:00

Credits

djnn

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-23679",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-28T15:44:53.658670Z",
                "version": "2.0.3"
              },
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            }
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        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-28T15:44:57.282Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/libusb/libusb/issues/1813"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "affected",
          "packageURL": "pkg:github/libusb/libusb",
          "product": "libusb",
          "repo": "https://github.com/libusb/libusb",
          "vendor": "libusb",
          "versions": [
            {
              "lessThan": "1.0.30",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:libusb:libusb:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "1.0.30",
                  "vulnerable": true
                }
              ],
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              "operator": "OR"
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      "credits": [
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        }
      ],
      "metrics": [
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          "cvssV4_0": {
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            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "LOCAL",
            "baseScore": 6.9,
            "baseSeverity": "MEDIUM",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
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            "availabilityImpact": "HIGH",
            "baseScore": 6.2,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
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            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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          "scenarios": [
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      "problemTypes": [
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      "providerMetadata": {
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      "references": [
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          "tags": [
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          ],
          "url": "https://github.com/libusb/libusb/releases/tag/v1.0.30"
        },
        {
          "tags": [
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          "url": "https://github.com/libusb/libusb/issues/1813"
        },
        {
          "tags": [
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          "url": "https://github.com/libusb/libusb/pull/1814"
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      "source": {
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    "datePublished": "2026-05-27T13:21:37.035Z",
    "dateReserved": "2026-01-14T17:13:44.903Z",
    "dateUpdated": "2026-07-14T15:53:32.218Z",
    "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.

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.
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OESA-2026-2742 (CVE-2026-23679)

CVE-2026-23679 (GCVE-0-2026-23679)

Tags

Sightings

Nomenclature

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