{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "4ab8c18d4d67321cc7b660559de17511d4fc0237"
            },
            {
              "fixed": "89ff289cbf5d3b659a2babc5ccaae4eaf7e7cf53"
            },
            {
              "fixed": "d638ec188e95fe60f4b01106ffd41958f8fb3c2c"
            },
            {
              "fixed": "f8163c414de8640f2ca82ce4dc93409d4cdc2fad"
            },
            {
              "fixed": "012406f89abc52d1d5f07aa5653b519ebf6d2407"
            },
            {
              "fixed": "c6d2af3b217a525741c472f0ab45d7d274b8468f"
            },
            {
              "fixed": "3e1b1ac47e8163627f159f30d80d51b914620dd4"
            },
            {
              "fixed": "313ca06e7e224ca1dfadd5722fe71fb8bc276b8b"
            },
            {
              "fixed": "7b681dd5fbf60b24a13c14661e5b7735759fb491"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.19.0"
            },
            {
              "fixed": "5.10.261"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.212"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.178"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.145"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.96"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.39"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64330.json"
  },
  "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-\u003esvids using\npmdata-\u003esvid_index as an array index without bounds validation:\n\n    paltmode-\u003esvid = pmdata-\u003esvids[pmdata-\u003esvid_index];\n\nIf pmdata-\u003esvid_index is driven beyond SVID_DISCOVERY_MAX (16), it results\nin an out-of-bounds read of the pmdata-\u003esvids 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-\u003esvid 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-\u003esvid_index is non-negative and strictly\nless than pmdata-\u003ensvids before accessing the pmdata-\u003esvids array inside\nsvdm_consume_modes().",
  "id": "CVE-2026-64330",
  "modified": "2026-07-27T03:56:25.664198239Z",
  "published": "2026-07-25T08:49:57.734Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/012406f89abc52d1d5f07aa5653b519ebf6d2407"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/313ca06e7e224ca1dfadd5722fe71fb8bc276b8b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3e1b1ac47e8163627f159f30d80d51b914620dd4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7b681dd5fbf60b24a13c14661e5b7735759fb491"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/89ff289cbf5d3b659a2babc5ccaae4eaf7e7cf53"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c6d2af3b217a525741c472f0ab45d7d274b8468f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d638ec188e95fe60f4b01106ffd41958f8fb3c2c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f8163c414de8640f2ca82ce4dc93409d4cdc2fad"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64330.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64330"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "summary": "usb: typec: tcpm: Validate SVID index in svdm_consume_modes()"
}