CVE-2026-89470

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.

CVSS v3 8.4 HIGH

8.4^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.5 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/304a29ac55ba3ee6eceaf7d83d09cd9709f3bf60
https://git.kernel.org/stable/c/3262977a05b23d1be9fc86727a2b490ec997543e
https://git.kernel.org/stable/c/3ce9218639ff62d011eb8aca0943aa670a654c7b
https://git.kernel.org/stable/c/4b1f2be1e1b74a50386ba718de3d62bfcf5ee701
https://git.kernel.org/stable/c/657cd3a42e937276262c0a8ae6b01a87004309de
https://git.kernel.org/stable/c/dce1750ddbd3380b1f6090dda2b07d2ebea2261d
https://git.kernel.org/stable/c/e951b65ef1699439079b723ca5c72cbe44771647
https://git.kernel.org/stable/c/fd5f289cca04ad869b34fc9ccb647670bfdb60ac

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-11 20:19

Updated : 2026-09-14 13:19

NVD link : CVE-2026-89470

Mitre link : CVE-2026-89470

CVE.ORG link : CVE-2026-89470

JSON object : View

Products Affected

No product.

CWE

No CWE.

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The only check\nis against the number of USB PD ports which the embedded controller\nalso defines. A malicious embedded controller could return an inaccurate\nport count (up to 255) resulting in an out of bounds write and\nsubsequent memory corruption.\n\nUpdate helper functions in cros_usbpd-charger to limit port counts to\nEC_USB_PD_MAX_PORTS."}], "lastModified": "2026-09-14T13:19:03.310", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}