CVE-2026-89470

Last refreshed2026-10-19

Status: UPDATED | Advisory ID: CVE-2026-89470

Key Details

CVE	CVE-2026-89470
CVSS Score / Version	8.4 (High) / CVSS v3.1
Updated	2026-10-19
CVSS Vector	`CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`
CVSS Prose	attack vector is local; attack complexity is low; privileges required is none; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected products	Linux Kernel

Vendor	Product	Affected Versions	Patch Status
Linux	Linux Kernel

Vendor

Product

Affected Versions

Patch Status

Linux

Linux Kernel

Subsystems	OT Supporting Infrastructure
Sectors	All Sectors

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. (NVD)

Monitor Linux's web page for any future patch releases.

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-89470
CVE	https://www.cve.org/CVERecord?id=CVE-2026-89470

Source

Reference

NVD

CVE