{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "cd22e73bdf5eff7e68a0f8bdfbce123ad43651f6"
            },
            {
              "fixed": "6c892ed9f4129ae40ef0f92e1bb31aa0b0ddc72c"
            },
            {
              "fixed": "3d3c212b70633332ab71672aa2bc6af257d2ec83"
            },
            {
              "fixed": "b98e1e28bd95b0fa33164eec1e763d26c7058b39"
            },
            {
              "fixed": "50f0c8dd8c3390f851cfb97ca13116f9ee6469d1"
            },
            {
              "fixed": "f28066057134aa9294caa597b670daf505ad9dce"
            },
            {
              "fixed": "40d2ffb74094cf36edbe05855566a4c58b6ce808"
            },
            {
              "fixed": "f32c3a9a77cfb50934a60b05d5407649af062535"
            },
            {
              "fixed": "d6764992f17b23d91ff93ce905ab53c2aa7191f0"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.17.0"
            },
            {
              "fixed": "5.10.265"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.216"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.183"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.152"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.104"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.45"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74585.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nthunderbolt: Bound the DROM dual link port number before indexing sw-\u003eports\n\ntb_drom_parse_entry_port() validates the device-supplied header-\u003eindex\nagainst sw-\u003econfig.max_port_number before indexing sw-\u003eports[], but the\nsibling field entry-\u003edual_link_port_nr -- a 6-bit value also read from\nthe DROM -- indexes the same array with no such check. A malicious or\nmalformed Thunderbolt device can set dual_link_port_nr beyond the\nallocated sw-\u003eports[] (max_port_number + 1 entries), producing an\nout-of-bounds tb_port pointer that is stored and later dereferenced.\n\nReject a port entry whose dual_link_port_nr exceeds max_port_number,\nthe same bound already applied to header-\u003eindex.",
  "id": "CVE-2026-74585",
  "modified": "2026-08-24T11:35:53.348831606Z",
  "published": "2026-08-22T15:31:38.339Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3d3c212b70633332ab71672aa2bc6af257d2ec83"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/40d2ffb74094cf36edbe05855566a4c58b6ce808"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/50f0c8dd8c3390f851cfb97ca13116f9ee6469d1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6c892ed9f4129ae40ef0f92e1bb31aa0b0ddc72c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b98e1e28bd95b0fa33164eec1e763d26c7058b39"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d6764992f17b23d91ff93ce905ab53c2aa7191f0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f28066057134aa9294caa597b670daf505ad9dce"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f32c3a9a77cfb50934a60b05d5407649af062535"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74585.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74585"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "thunderbolt: Bound the DROM dual link port number before indexing sw-\u003eports"
}