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power: supply: cros_usbpd: Limit port counts to EC_USB_PD_MAX_PORTS

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: power: supply: cros_usbpd: Limit port counts to EC_USB_PD_MAX_PORTS Currently the cros_usbpd-charger driver probe iterates based on raw charger port count returned by the embedded controller. The only check is against the number of USB PD ports which the embedded controller also defines. A malicious embedded controller could return an inaccurate port count (up to 255) resulting in an out of bounds write and subsequent memory corruption. Update helper functions in cros_usbpd-charger to limit port counts to EC_USB_PD_MAX_PORTS.

Announced Group revision 1
Original source ↗

CVE-2026-89470

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-2026-89470

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": "3af15cfacd1eef7f223802d49a88cae23c509183",
        "lessThan": "e951b65ef1699439079b723ca5c72cbe44771647",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "3af15cfacd1eef7f223802d49a88cae23c509183",
        "lessThan": "3ce9218639ff62d011eb8aca0943aa670a654c7b",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "3af15cfacd1eef7f223802d49a88cae23c509183",
        "lessThan": "dce1750ddbd3380b1f6090dda2b07d2ebea2261d",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "3af15cfacd1eef7f223802d49a88cae23c509183",
        "lessThan": "3262977a05b23d1be9fc86727a2b490ec997543e",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "3af15cfacd1eef7f223802d49a88cae23c509183",
        "lessThan": "fd5f289cca04ad869b34fc9ccb647670bfdb60ac",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "3af15cfacd1eef7f223802d49a88cae23c509183",
        "lessThan": "4b1f2be1e1b74a50386ba718de3d62bfcf5ee701",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "3af15cfacd1eef7f223802d49a88cae23c509183",
        "lessThan": "304a29ac55ba3ee6eceaf7d83d09cd9709f3bf60",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "3af15cfacd1eef7f223802d49a88cae23c509183",
        "lessThan": "657cd3a42e937276262c0a8ae6b01a87004309de",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/power/supply/cros_usbpd-charger.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "4.20"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "4.20",
        "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": "6.12.109",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.50",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.2.4",
        "versionType": "semver",
        "lessThanOrEqual": "7.2.*"
      },
      {
        "status": "unaffected",
        "version": "7.3",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/power/supply/cros_usbpd-charger.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-89470

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#34999 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement

Revision history

  1. CVE-2026-89470 · Revision 1Source updated