CVE-2026-63963

Full vulnerability record from the local CVENow database.

Description

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

Not scored

CVSS score

Not available

Vulnerability status

Undergoing Analysis

Source identifier

416baaa9-dc9f-4396-8d5f-8c081fb06d67

Published

2026-07-19 16:17:15.270000

Last modified

2026-10-30 13:19:23.720000

View original CVE JSON

{
  "id": "CVE-2026-63963",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-07-19T16:17:15.270",
  "lastModified": "2026-10-30T13:19:23.720",
  "vulnStatus": "Undergoing Analysis",
  "cveTags": [],
  "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."
    }
  ],
  "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": "f0690a25a140b853b1842fa80faf828601bb47e8",
              "lessThan": "150c30131c032b4b1ad9acd29f2834321d85ae4b",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "f0690a25a140b853b1842fa80faf828601bb47e8",
              "lessThan": "6bacd22e1eae77abf089bbdc016270200a8dc83b",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "f0690a25a140b853b1842fa80faf828601bb47e8",
              "lessThan": "569f7971542eb10025d8a0989b83f28a29d8ba20",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "f0690a25a140b853b1842fa80faf828601bb47e8",
              "lessThan": "f9d787fbe83127105e42088cca40e5118db0d810",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "f0690a25a140b853b1842fa80faf828601bb47e8",
              "lessThan": "ed8649f3822e211d025bcab5158af6f8a38c8705",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "f0690a25a140b853b1842fa80faf828601bb47e8",
              "lessThan": "8fbc349e8383125dd2d8de1c1e926279d398ab17",
              "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": "4.12",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "4.12",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.1.191",
              "lessThanOrEqual": "6.1.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.6.160",
              "lessThanOrEqual": "6.6.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.12.93",
              "lessThanOrEqual": "6.12.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.18.35",
              "lessThanOrEqual": "6.18.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.0.12",
              "lessThanOrEqual": "7.0.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.1",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {},
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/150c30131c032b4b1ad9acd29f2834321d85ae4b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/569f7971542eb10025d8a0989b83f28a29d8ba20",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/6bacd22e1eae77abf089bbdc016270200a8dc83b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/8fbc349e8383125dd2d8de1c1e926279d398ab17",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ed8649f3822e211d025bcab5158af6f8a38c8705",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/f9d787fbe83127105e42088cca40e5118db0d810",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ]
}