{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "af8622f6a585d8d82b11cd7987e082861fd0edd3"
            },
            {
              "fixed": "8fde7e4a366184e9a6aa95541e52933a73c00a74"
            },
            {
              "fixed": "83f1abd62cc134700ba92e1e2dc650a49a185497"
            },
            {
              "fixed": "1ffed96ef986e2cdf986aa4a4506a5e6dcdf4456"
            },
            {
              "fixed": "58e0ee293ec5e06cacbe3953ad44042f1473dae9"
            },
            {
              "fixed": "ac9f878c468052af6571e8639ab1c3ae040b908f"
            },
            {
              "fixed": "33a81acd2d1d0667d4eff93cb90339fa53e617e8"
            },
            {
              "fixed": "bdaaf3074aedce8f1b173cc363d61cff5f6a585f"
            },
            {
              "fixed": "04cec690b1fd9d1c4c314b91a10d8c68a3acfe18"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.2.0"
            },
            {
              "fixed": "5.10.270"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.221"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.188"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.157"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.110"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.51"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90025.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: typec: ucsi: displayport: Fix OOB altmode array index\n\nThe UCSI displayport driver indexes the connector's port altmode array\nwith the GET_CURRENT_CAM response after checking it is not 0xff. The\nport altmode array is UCSI_MAX_ALTMODES elements long. If the PPM\nreturns an invalid GET_CURRENT_CAM response above UCSI_MAX_ALTMODES and\nnot equal to 0xff, the kernel may crash with an array index OOB error.\n\nUpdate the UCSI displayport driver to verify the current cam is less\nthan UCSI_MAX_ALTMODES before accessing the port altmode array.",
  "id": "CVE-2026-90025",
  "modified": "2026-09-18T03:30:28.928438497Z",
  "published": "2026-09-16T10:33:28.313Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/04cec690b1fd9d1c4c314b91a10d8c68a3acfe18"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1ffed96ef986e2cdf986aa4a4506a5e6dcdf4456"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/33a81acd2d1d0667d4eff93cb90339fa53e617e8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/58e0ee293ec5e06cacbe3953ad44042f1473dae9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/83f1abd62cc134700ba92e1e2dc650a49a185497"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8fde7e4a366184e9a6aa95541e52933a73c00a74"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ac9f878c468052af6571e8639ab1c3ae040b908f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bdaaf3074aedce8f1b173cc363d61cff5f6a585f"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90025.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90025"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "usb: typec: ucsi: displayport: Fix OOB altmode array index"
}