{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-63958",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-63958"
  ],
  "published": "2026-07-19T14:56:29Z",
  "summary": "usb: typec: ucsi: validate connector number in ucsi_connector_change()",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: typec: ucsi: validate connector number in ucsi_connector_change()\n\nThe connector number in a UCSI CCI notification is a 7-bit field\nsupplied by the PPM.  ucsi_connector_change() uses it to index the\nucsi->connector[] array without checking it against the number of\nconnectors the PPM reported at init time, so a buggy or malicious PPM\n(EC firmware, or an I2C-attached UCSI controller on the ccg / stm32g0 /\nglink transports) can drive schedule_work() on memory past the end of\nthe array.\n\nReject connector numbers that are zero or exceed cap.num_connectors\nbefore dereferencing the array.",
  "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": "6.1.176",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-63958"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/cea949203faef9cb783adc7b978cce056271e057"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/156b6f0aec6108909b0c4aedc78865b12766b347"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/bd24d92af4ae021b6209f28e9a57e1bf2260d4fd"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/0edd1e21587b0483c7ceb993b9fb9668bbef7433"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/5af2719b460ab904c504fc069d1dd2a3aa2b22b0"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/288a81a8507052bcfbf884d39a463c44c42c5fd9"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-07-20T06:40:36Z"
  }
}