{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-89470",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-89470"
  ],
  "published": "2026-09-11T19:47:07Z",
  "summary": "power: supply: cros_usbpd: Limit port counts to EC_USB_PD_MAX_PORTS",
  "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.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.188",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-89470"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/e951b65ef1699439079b723ca5c72cbe44771647"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3ce9218639ff62d011eb8aca0943aa670a654c7b"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/dce1750ddbd3380b1f6090dda2b07d2ebea2261d"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3262977a05b23d1be9fc86727a2b490ec997543e"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/fd5f289cca04ad869b34fc9ccb647670bfdb60ac"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/4b1f2be1e1b74a50386ba718de3d62bfcf5ee701"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/304a29ac55ba3ee6eceaf7d83d09cd9709f3bf60"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/657cd3a42e937276262c0a8ae6b01a87004309de"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-09-14T12:06:03Z"
  }
}