Vulnerability-Lookup

CVE-2026-64330 (GCVE-0-2026-64330)

Vulnerability from cvelistv5 – Published: 2026-07-25 08:49 – Updated: 2026-07-25 08:49

Title

usb: typec: tcpm: Validate SVID index in svdm_consume_modes()

Summary

In the Linux kernel, the following vulnerability has been resolved: usb: typec: tcpm: Validate SVID index in svdm_consume_modes() In svdm_consume_modes(), the SVID value is read from pmdata->svids using pmdata->svid_index as an array index without bounds validation: paltmode->svid = pmdata->svids[pmdata->svid_index]; If pmdata->svid_index is driven beyond SVID_DISCOVERY_MAX (16), it results in an out-of-bounds read of the pmdata->svids array. Because pd_mode_data is embedded inside struct tcpm_port, indexing past svids reads into adjacent fields. In particular: - At index 16, it reads the altmodes count. - At index 18 and beyond, it reads into altmode_desc[], which contains partner-supplied SVDM Discovery Modes VDOs. By injecting a chosen SVID into altmode_desc[0].vdo and driving svid_index to 20, the partner can force paltmode->svid to be loaded with an arbitrary, partner- chosen SVID, which is then registered via typec_partner_register_altmode(). Fix this by validating that pmdata->svid_index is non-negative and strictly less than pmdata->nsvids before accessing the pmdata->svids array inside svdm_consume_modes().

Severity

No CVSS data available.

Assigner

Linux

References

8 references

URL	Tags
https://git.kernel.org/stable/c/89ff289cbf5d3b659…
https://git.kernel.org/stable/c/d638ec188e95fe60f…
https://git.kernel.org/stable/c/f8163c414de8640f2…
https://git.kernel.org/stable/c/012406f89abc52d1d…
https://git.kernel.org/stable/c/c6d2af3b217a52574…
https://git.kernel.org/stable/c/3e1b1ac47e8163627…
https://git.kernel.org/stable/c/313ca06e7e224ca1d…
https://git.kernel.org/stable/c/7b681dd5fbf60b24a…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 4ab8c18d4d67321cc7b660559de17511d4fc0237 , < 89ff289cbf5d3b659a2babc5ccaae4eaf7e7cf53 (git) Affected: 4ab8c18d4d67321cc7b660559de17511d4fc0237 , < d638ec188e95fe60f4b01106ffd41958f8fb3c2c (git) Affected: 4ab8c18d4d67321cc7b660559de17511d4fc0237 , < f8163c414de8640f2ca82ce4dc93409d4cdc2fad (git) Affected: 4ab8c18d4d67321cc7b660559de17511d4fc0237 , < 012406f89abc52d1d5f07aa5653b519ebf6d2407 (git) Affected: 4ab8c18d4d67321cc7b660559de17511d4fc0237 , < c6d2af3b217a525741c472f0ab45d7d274b8468f (git) Affected: 4ab8c18d4d67321cc7b660559de17511d4fc0237 , < 3e1b1ac47e8163627f159f30d80d51b914620dd4 (git) Affected: 4ab8c18d4d67321cc7b660559de17511d4fc0237 , < 313ca06e7e224ca1dfadd5722fe71fb8bc276b8b (git) Affected: 4ab8c18d4d67321cc7b660559de17511d4fc0237 , < 7b681dd5fbf60b24a13c14661e5b7735759fb491 (git)
Linux	Linux	Affected: 4.19 Unaffected: 0 , < 4.19 (semver) Unaffected: 5.10.261 , ≤ 5.10.* (semver) Unaffected: 5.15.212 , ≤ 5.15.* (semver) Unaffected: 6.1.178 , ≤ 6.1.* (semver) Unaffected: 6.6.145 , ≤ 6.6.* (semver) Unaffected: 6.12.96 , ≤ 6.12.* (semver) Unaffected: 6.18.39 , ≤ 6.18.* (semver) Unaffected: 7.1.4 , ≤ 7.1.* (semver) Unaffected: 7.2-rc3 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

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{
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      "descriptions": [
        {
          "lang": "en",
          "value": "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()."
        }
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      "providerMetadata": {
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    "datePublished": "2026-07-25T08:49:57.734Z",
    "dateReserved": "2026-07-19T15:36:31.781Z",
    "dateUpdated": "2026-07-25T08:49:57.734Z",
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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().\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/usb/typec/tcpm/tcpm.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"4ab8c18d4d67321cc7b660559de17511d4fc0237\",\"lessThan\":\"89ff289cbf5d3b659a2babc5ccaae4eaf7e7cf53\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"4ab8c18d4d67321cc7b660559de17511d4fc0237\",\"lessThan\":\"d638ec188e95fe60f4b01106ffd41958f8fb3c2c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"4ab8c18d4d67321cc7b660559de17511d4fc0237\",\"lessThan\":\"f8163c414de8640f2ca82ce4dc93409d4cdc2fad\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"4ab8c18d4d67321cc7b660559de17511d4fc0237\",\"lessThan\":\"012406f89abc52d1d5f07aa5653b519ebf6d2407\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"4ab8c18d4d67321cc7b660559de17511d4fc0237\",\"lessThan\":\"c6d2af3b217a525741c472f0ab45d7d274b8468f\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"4ab8c18d4d67321cc7b660559de17511d4fc0237\",\"lessThan\":\"3e1b1ac47e8163627f159f30d80d51b914620dd4\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"4ab8c18d4d67321cc7b660559de17511d4fc0237\",\"lessThan\":\"313ca06e7e224ca1dfadd5722fe71fb8bc276b8b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"4ab8c18d4d67321cc7b660559de17511d4fc0237\",\"lessThan\":\"7b681dd5fbf60b24a13c14661e5b7735759fb491\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/usb/typec/tcpm/tcpm.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"4.19\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"4.19\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.261\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.212\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.178\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.145\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.96\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.39\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.4\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2-rc3\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/012406f89abc52d1d5f07aa5653b519ebf6d2407\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/313ca06e7e224ca1dfadd5722fe71fb8bc276b8b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3e1b1ac47e8163627f159f30d80d51b914620dd4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/7b681dd5fbf60b24a13c14661e5b7735759fb491\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/89ff289cbf5d3b659a2babc5ccaae4eaf7e7cf53\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c6d2af3b217a525741c472f0ab45d7d274b8468f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d638ec188e95fe60f4b01106ffd41958f8fb3c2c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f8163c414de8640f2ca82ce4dc93409d4cdc2fad\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "suse_vex": {
      "aggregate_severity": "not set",
      "current_release_date": "2026-07-25T16:01:44Z",
      "cve": "CVE-2026-64330",
      "id": "CVE-2026-64330",
      "initial_release_date": "2026-07-25T16:01:44Z",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-64330",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-64330.json",
      "version": "2"
    }
  }
}

GHSA-5X5W-F8X6-M8WF

Vulnerability from github – Published: 2026-07-25 12:31 – Updated: 2026-07-25 12:31

Details

In the Linux kernel, the following vulnerability has been resolved:

usb: typec: tcpm: Validate SVID index in svdm_consume_modes()

In svdm_consume_modes(), the SVID value is read from pmdata->svids using pmdata->svid_index as an array index without bounds validation:

paltmode->svid = pmdata->svids[pmdata->svid_index];

If pmdata->svid_index is driven beyond SVID_DISCOVERY_MAX (16), it results in an out-of-bounds read of the pmdata->svids array. Because pd_mode_data is embedded inside struct tcpm_port, indexing past svids reads into adjacent fields. In particular: - At index 16, it reads the altmodes count. - At index 18 and beyond, it reads into altmode_desc[], which contains partner-supplied SVDM Discovery Modes VDOs.

By injecting a chosen SVID into altmode_desc[0].vdo and driving svid_index to 20, the partner can force paltmode->svid to be loaded with an arbitrary, partner- chosen SVID, which is then registered via typec_partner_register_altmode().

Fix this by validating that pmdata->svid_index is non-negative and strictly less than pmdata->nsvids before accessing the pmdata->svids array inside svdm_consume_modes().

Show details on source website

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{
  "affected": [],
  "aliases": [
    "CVE-2026-64330"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-25T10:17:14Z",
    "severity": null
  },
  "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": "GHSA-5x5w-f8x6-m8wf",
  "modified": "2026-07-25T12:31:31Z",
  "published": "2026-07-25T12:31:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64330"
    },
    {
      "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"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.

Action not permitted

CVE-2026-64330 (GCVE-0-2026-64330)

GHSA-5X5W-F8X6-M8WF

Tags

Sightings

Nomenclature