CVE-2026-47104 (GCVE-0-2026-47104)

Vulnerability from cvelistv5 – Published: 2026-05-27 13:20 – Updated: 2026-07-14 21:33 X_Open Source
VLAI
Title
libusb < 1.0.30 Out-of-Bounds Read in parse_iad_array()
Summary
libusb before version 1.0.30 contains a one-byte out-of-bounds read vulnerability in parse_iad_array() in descriptor.c that allows attackers to trigger a denial of service by supplying a malformed USB descriptor whose bLength equals size minus one, causing the bounds check to use the original buffer size instead of the remaining size. Attackers in virtualized environments with USB passthrough can supply crafted descriptors through libusb_get_active_interface_association_descriptors or libusb_get_interface_association_descriptors to read one byte past the end of the malloc allocation, resulting in a denial of service.
Severity
5.1 (Medium)
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
4 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-27 15:32 UTC
CWE
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6250 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
libusb libusb Affected: 0 , < 1.0.30 (semver)
    cpe:2.3:a:libusb:libusb:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-04-25 00:00
Credits
@MarkLee131
Show details on NVD website
To clipboard 

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              "url": "https://github.com/libusb/libusb/pull/1814"
            },
            {
              "tags": [
                "patch"
              ],
              "url": "https://github.com/libusb/libusb/commit/578ab76b4c434f8b204137ab6d7310689c7a9704"
            },
            {
              "tags": [
                "third-party-advisory"
              ],
              "url": "https://www.vulncheck.com/advisories/libusb-out-of-bounds-read-in-parse-iad-array"
            }
          ],
          "source": {
            "discovery": "UNKNOWN"
          },
          "tags": [
            "x_open-source"
          ],
          "title": "libusb \u003c 1.0.30 Out-of-Bounds Read in parse_iad_array()",
          "x_generator": {
            "engine": "vulncheck"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "assignerShortName": "VulnCheck",
        "cveId": "CVE-2026-47104",
        "datePublished": "2026-05-27T13:20:44.432Z",
        "dateReserved": "2026-05-18T19:22:26.748Z",
        "dateUpdated": "2026-07-14T21:33:01.719Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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