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usb: typec: ucsi: displayport: Fix OOB altmode array index

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: usb: typec: ucsi: displayport: Fix OOB altmode array index The UCSI displayport driver indexes the connector's port altmode array with the GET_CURRENT_CAM response after checking it is not 0xff. The port altmode array is UCSI_MAX_ALTMODES elements long. If the PPM returns an invalid GET_CURRENT_CAM response above UCSI_MAX_ALTMODES and not equal to 0xff, the kernel may crash with an array index OOB error. Update the UCSI displayport driver to verify the current cam is less than UCSI_MAX_ALTMODES before accessing the port altmode array.

Announced Group revision 1
Original source ↗

CVE-2026-90025

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-90025

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "af8622f6a585d8d82b11cd7987e082861fd0edd3",
        "lessThan": "8fde7e4a366184e9a6aa95541e52933a73c00a74",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "af8622f6a585d8d82b11cd7987e082861fd0edd3",
        "lessThan": "83f1abd62cc134700ba92e1e2dc650a49a185497",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "af8622f6a585d8d82b11cd7987e082861fd0edd3",
        "lessThan": "1ffed96ef986e2cdf986aa4a4506a5e6dcdf4456",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "af8622f6a585d8d82b11cd7987e082861fd0edd3",
        "lessThan": "58e0ee293ec5e06cacbe3953ad44042f1473dae9",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "af8622f6a585d8d82b11cd7987e082861fd0edd3",
        "lessThan": "ac9f878c468052af6571e8639ab1c3ae040b908f",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "af8622f6a585d8d82b11cd7987e082861fd0edd3",
        "lessThan": "33a81acd2d1d0667d4eff93cb90339fa53e617e8",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "af8622f6a585d8d82b11cd7987e082861fd0edd3",
        "lessThan": "bdaaf3074aedce8f1b173cc363d61cff5f6a585f",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "af8622f6a585d8d82b11cd7987e082861fd0edd3",
        "lessThan": "04cec690b1fd9d1c4c314b91a10d8c68a3acfe18",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/usb/typec/ucsi/displayport.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "5.2"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "5.2",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.270",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.221",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.188",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.157",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.110",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.51",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.2.5",
        "versionType": "semver",
        "lessThanOrEqual": "7.2.*"
      },
      {
        "status": "unaffected",
        "version": "7.3",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/usb/typec/ucsi/displayport.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-90025

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#36456 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement

Revision history

  1. CVE-2026-90025 · Revision 1Source updated