---
id: CVE-2026-93129
title: >-
  In the Linux kernel, the following vulnerability has been resolved:


  platform/x86: dell-wmi-base: Fix handling of ultra performance key


  The commit message of commit 5fbd827eb9c2 ("platform/x86: dell-wmi: Recognise
  or support new switche…
summary: >-
  In the Linux kernel, the following vulnerability has been resolved:


  platform/x86: dell-wmi-base: Fix handling of ultra performance key


  The commit message of commit 5fbd827eb9c2 ("platform/x86: dell-wmi: Recognise
  or support new switche…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 5fbd827eb9c224c33a5f263ee543a75fe957faa3 <
    392c19faec6bf4cb72fb02322e2a61e198dd8f72
  - >-
    Linux >= 5fbd827eb9c224c33a5f263ee543a75fe957faa3 <
    adfd6846bea13667ff28f8aaf00c32fbd69825ab
  - Linux 5.16
published: '2026-09-17'
updated: '2026-09-17'
sourceUpdated: '2026-09-17T17:18:07.693'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-93129'
references:
  - url: 'https://git.kernel.org/stable/c/392c19faec6bf4cb72fb02322e2a61e198dd8f72'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/adfd6846bea13667ff28f8aaf00c32fbd69825ab'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-17T16:21:47.748Z'
epss: 0.00198
epssPercentile: 0.08448
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

platform/x86: dell-wmi-base: Fix handling of ultra performance key

The commit message of commit 5fbd827eb9c2 ("platform/x86: dell-wmi: Recognise or support new switches")
states that the ultra performance key contains additional data
after the type and code fields. The event data passed to
dell_wmi_process_key() is already parsed, so "buffer" already
starts after those two fields.

Use the correct index for accessing the first data field to avoid
a potential buffer overread.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.