{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "3af15cfacd1eef7f223802d49a88cae23c509183"
            },
            {
              "fixed": "e951b65ef1699439079b723ca5c72cbe44771647"
            },
            {
              "fixed": "3ce9218639ff62d011eb8aca0943aa670a654c7b"
            },
            {
              "fixed": "dce1750ddbd3380b1f6090dda2b07d2ebea2261d"
            },
            {
              "fixed": "3262977a05b23d1be9fc86727a2b490ec997543e"
            },
            {
              "fixed": "fd5f289cca04ad869b34fc9ccb647670bfdb60ac"
            },
            {
              "fixed": "4b1f2be1e1b74a50386ba718de3d62bfcf5ee701"
            },
            {
              "fixed": "304a29ac55ba3ee6eceaf7d83d09cd9709f3bf60"
            },
            {
              "fixed": "657cd3a42e937276262c0a8ae6b01a87004309de"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.20.0"
            },
            {
              "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": "6.12.109"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.50"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89470.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\npower: supply: cros_usbpd: Limit port counts to EC_USB_PD_MAX_PORTS\n\nCurrently the cros_usbpd-charger driver probe iterates based on raw\ncharger port count returned by the embedded controller. The only check\nis against the number of USB PD ports which the embedded controller\nalso defines. A malicious embedded controller could return an inaccurate\nport count (up to 255) resulting in an out of bounds write and\nsubsequent memory corruption.\n\nUpdate helper functions in cros_usbpd-charger to limit port counts to\nEC_USB_PD_MAX_PORTS.",
  "id": "CVE-2026-89470",
  "modified": "2026-09-15T03:30:21.675645265Z",
  "published": "2026-09-11T19:43:29.206Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/304a29ac55ba3ee6eceaf7d83d09cd9709f3bf60"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3262977a05b23d1be9fc86727a2b490ec997543e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3ce9218639ff62d011eb8aca0943aa670a654c7b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4b1f2be1e1b74a50386ba718de3d62bfcf5ee701"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/657cd3a42e937276262c0a8ae6b01a87004309de"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dce1750ddbd3380b1f6090dda2b07d2ebea2261d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e951b65ef1699439079b723ca5c72cbe44771647"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fd5f289cca04ad869b34fc9ccb647670bfdb60ac"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89470.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89470"
    },
    {
      "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:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "power: supply: cros_usbpd: Limit port counts to EC_USB_PD_MAX_PORTS"
}