High 8.4Published Sep 11, 2026

CVE-2026-89470power: supply: cros_usbpd: Limit port counts to EC_USB_PD_MAX_PORTS

Updated under an hour ago (Oct 27, 2026, 9:00 AM ET)

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Exploited in the last 30 days

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: 8.4 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Received
Record last updated: Oct 19, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 3af15cfacd1eef7f223802d49a88cae23c509183 before e951b65ef1699439079b723ca5c72cbe44771647; from 3af15cfacd1eef7f223802d49a88cae23c509183 before 3ce9218639ff62d011eb8aca0943aa670a654c7b; from 3af15cfacd1eef7f223802d49a88cae23c509183 before dce1750ddbd3380b1f6090dda2b07d2ebea2261d; from 3af15cfacd1eef7f223802d49a88cae23c509183 before 3262977a05b23d1be9fc86727a2b490ec997543e; from 3af15cfacd1eef7f223802d49a88cae23c509183 before fd5f289cca04ad869b34fc9ccb647670bfdb60ac; from 3af15cfacd1eef7f223802d49a88cae23c509183 before 4b1f2be1e1b74a50386ba718de3d62bfcf5ee701; from 3af15cfacd1eef7f223802d49a88cae23c509183 before 304a29ac55ba3ee6eceaf7d83d09cd9709f3bf60; from 3af15cfacd1eef7f223802d49a88cae23c509183 before 657cd3a42e937276262c0a8ae6b01a87004309de	CNA record

References

References

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.