Vulnerability-Lookup

GHSA-P527-VFP9-6CMQ

Vulnerability from github – Published: 2026-07-19 18:31 – Updated: 2026-07-19 18:31

Details

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

usb: typec: tcpm: validate VDO count in Discover Identity ACK handlers

Properly validate the count passed from a device when calling svdm_consume_identity() or svdm_consume_identity_sop_prime() as the device-controlled value could index off of the static arrays, which could leak data.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-63963"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-19T16:17:15Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: typec: tcpm: validate VDO count in Discover Identity ACK handlers\n\nProperly validate the count passed from a device when calling\nsvdm_consume_identity() or svdm_consume_identity_sop_prime() as the\ndevice-controlled value could index off of the static arrays, which\ncould leak data.",
  "id": "GHSA-p527-vfp9-6cmq",
  "modified": "2026-07-19T18:31:47Z",
  "published": "2026-07-19T18:31:47Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63963"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/569f7971542eb10025d8a0989b83f28a29d8ba20"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8fbc349e8383125dd2d8de1c1e926279d398ab17"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ed8649f3822e211d025bcab5158af6f8a38c8705"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f9d787fbe83127105e42088cca40e5118db0d810"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-63963 (GCVE-0-2026-63963)

Vulnerability from cvelistv5 – Published: 2026-07-19 14:55 – Updated: 2026-07-20 06:41

Title

usb: typec: tcpm: validate VDO count in Discover Identity ACK handlers

Summary

In the Linux kernel, the following vulnerability has been resolved: usb: typec: tcpm: validate VDO count in Discover Identity ACK handlers Properly validate the count passed from a device when calling svdm_consume_identity() or svdm_consume_identity_sop_prime() as the device-controlled value could index off of the static arrays, which could leak data.

Severity

No CVSS data available.

Assigner

Linux

References

4 references

URL	Tags
https://git.kernel.org/stable/c/569f7971542eb1002…
https://git.kernel.org/stable/c/f9d787fbe83127105…
https://git.kernel.org/stable/c/ed8649f3822e211d0…
https://git.kernel.org/stable/c/8fbc349e8383125dd…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: f0690a25a140b853b1842fa80faf828601bb47e8 , < 569f7971542eb10025d8a0989b83f28a29d8ba20 (git) Affected: f0690a25a140b853b1842fa80faf828601bb47e8 , < f9d787fbe83127105e42088cca40e5118db0d810 (git) Affected: f0690a25a140b853b1842fa80faf828601bb47e8 , < ed8649f3822e211d025bcab5158af6f8a38c8705 (git) Affected: f0690a25a140b853b1842fa80faf828601bb47e8 , < 8fbc349e8383125dd2d8de1c1e926279d398ab17 (git)
Linux	Linux	Affected: 4.12 Unaffected: 0 , < 4.12 (semver) Unaffected: 6.12.93 , ≤ 6.12.* (semver) Unaffected: 6.18.35 , ≤ 6.18.* (semver) Unaffected: 7.0.12 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/typec/tcpm/tcpm.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "569f7971542eb10025d8a0989b83f28a29d8ba20",
              "status": "affected",
              "version": "f0690a25a140b853b1842fa80faf828601bb47e8",
              "versionType": "git"
            },
            {
              "lessThan": "f9d787fbe83127105e42088cca40e5118db0d810",
              "status": "affected",
              "version": "f0690a25a140b853b1842fa80faf828601bb47e8",
              "versionType": "git"
            },
            {
              "lessThan": "ed8649f3822e211d025bcab5158af6f8a38c8705",
              "status": "affected",
              "version": "f0690a25a140b853b1842fa80faf828601bb47e8",
              "versionType": "git"
            },
            {
              "lessThan": "8fbc349e8383125dd2d8de1c1e926279d398ab17",
              "status": "affected",
              "version": "f0690a25a140b853b1842fa80faf828601bb47e8",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/typec/tcpm/tcpm.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.12"
            },
            {
              "lessThan": "4.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.93",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.35",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.12",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.93",
                  "versionStartIncluding": "4.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.35",
                  "versionStartIncluding": "4.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionStartIncluding": "4.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "4.12",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: typec: tcpm: validate VDO count in Discover Identity ACK handlers\n\nProperly validate the count passed from a device when calling\nsvdm_consume_identity() or svdm_consume_identity_sop_prime() as the\ndevice-controlled value could index off of the static arrays, which\ncould leak data."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-20T06:41:43.925Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/569f7971542eb10025d8a0989b83f28a29d8ba20"
        },
        {
          "url": "https://git.kernel.org/stable/c/f9d787fbe83127105e42088cca40e5118db0d810"
        },
        {
          "url": "https://git.kernel.org/stable/c/ed8649f3822e211d025bcab5158af6f8a38c8705"
        },
        {
          "url": "https://git.kernel.org/stable/c/8fbc349e8383125dd2d8de1c1e926279d398ab17"
        }
      ],
      "title": "usb: typec: tcpm: validate VDO count in Discover Identity ACK handlers",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
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  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-63963",
    "datePublished": "2026-07-19T14:55:52.388Z",
    "dateReserved": "2026-07-19T07:54:57.024Z",
    "dateUpdated": "2026-07-20T06:41:43.925Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Action not permitted

GHSA-P527-VFP9-6CMQ

CVE-2026-63963 (GCVE-0-2026-63963)

Tags

Sightings

Nomenclature