{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-64330",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-64330"
  ],
  "published": "2026-07-25T08:51:45Z",
  "summary": "usb: typec: tcpm: Validate SVID index in svdm_consume_modes()",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: typec: tcpm: Validate SVID index in svdm_consume_modes()\n\nIn svdm_consume_modes(), the SVID value is read from pmdata->svids using\npmdata->svid_index as an array index without bounds validation:\n\n    paltmode->svid = pmdata->svids[pmdata->svid_index];\n\nIf pmdata->svid_index is driven beyond SVID_DISCOVERY_MAX (16), it results\nin an out-of-bounds read of the pmdata->svids array. Because pd_mode_data\nis embedded inside struct tcpm_port, indexing past svids reads into\nadjacent fields. In particular:\n- At index 16, it reads the altmodes count.\n- At index 18 and beyond, it reads into altmode_desc[], which contains\n  partner-supplied SVDM Discovery Modes VDOs.\n\nBy injecting a chosen SVID into altmode_desc[0].vdo and driving svid_index\nto 20, the partner can force paltmode->svid to be loaded with an arbitrary,\npartner- chosen SVID, which is then registered via\ntypec_partner_register_altmode().\n\nFix this by validating that pmdata->svid_index is non-negative and strictly\nless than pmdata->nsvids before accessing the pmdata->svids array inside\nsvdm_consume_modes().",
  "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": "6.1.178",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-64330"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/89ff289cbf5d3b659a2babc5ccaae4eaf7e7cf53"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/d638ec188e95fe60f4b01106ffd41958f8fb3c2c"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/f8163c414de8640f2ca82ce4dc93409d4cdc2fad"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/012406f89abc52d1d5f07aa5653b519ebf6d2407"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/c6d2af3b217a525741c472f0ab45d7d274b8468f"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3e1b1ac47e8163627f159f30d80d51b914620dd4"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/313ca06e7e224ca1dfadd5722fe71fb8bc276b8b"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/7b681dd5fbf60b24a13c14661e5b7735759fb491"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-17T05:24:08Z"
  }
}