---
id: CVE-2026-98835
title: 'kernel: iio: accel: kionix-kx022a: Fix array boundary check (CVE-2026-98835)'
summary: >-
  A flaw was found in the Linux kernel's Kionix KX022A accelerometer driver. A
  local user could trigger a Denial of Service (DoS) or kernel memory disclosure
  due to an off-by-one array bounds validation check when converting device
  register …
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cvssSource: vendor
cwe: CWE-125
vendor: Red Hat
product: Linux
affected:
  - >-
    Linux >= 7c1d1677b3227c6b18ac999f2b84778baa280b8f <
    714d8f0b1c616a6a82be87ccb72271b6092773d1
  - >-
    Linux >= 7c1d1677b3227c6b18ac999f2b84778baa280b8f <
    87746be179dca4d94d73d5a323a39a87bb2e90fc
  - >-
    Linux >= 7c1d1677b3227c6b18ac999f2b84778baa280b8f <
    4c73c1859fa64509aae7e23a6dbd2d5c8a64c05d
  - >-
    Linux >= 7c1d1677b3227c6b18ac999f2b84778baa280b8f <
    22d377178de281d21ddf908d03a8e9fde3339d9f
  - >-
    Linux >= 7c1d1677b3227c6b18ac999f2b84778baa280b8f <
    0e65412aee4f651d2c9785f542a13e4b44002a75
  - Linux 6.2
published: '2026-10-18'
updated: '2026-10-23'
sourceUpdated: '2026-10-23T21:44:51+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98835.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98835.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-98835'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2555209'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-98835'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98835'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98835.mbox
  - url: 'https://git.kernel.org/stable/c/714d8f0b1c616a6a82be87ccb72271b6092773d1'
  - url: 'https://git.kernel.org/stable/c/87746be179dca4d94d73d5a323a39a87bb2e90fc'
  - url: 'https://git.kernel.org/stable/c/4c73c1859fa64509aae7e23a6dbd2d5c8a64c05d'
  - url: 'https://git.kernel.org/stable/c/22d377178de281d21ddf908d03a8e9fde3339d9f'
  - url: 'https://git.kernel.org/stable/c/0e65412aee4f651d2c9785f542a13e4b44002a75'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.00168
epssPercentile: 0.06031
ingestedAt: '2026-10-18T16:47:32.469Z'
---

## Overview

A flaw was found in the Linux kernel's Kionix KX022A accelerometer driver. A local user could trigger a Denial of Service (DoS) or kernel memory disclosure due to an off-by-one array bounds validation check when converting device register values to array indices. This flaw leads to an out-of-bounds read beyond the allocated buffer, potentially crashing the system.

## Vendor advisories

- **Red Hat VEX** · Moderate · updated 2026-10-23 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98835.json)

**kernel: iio: accel: kionix-kx022a: Fix array boundary check** — rated Moderate by Red Hat. Released 2026-10-18, updated 2026-10-23.

Not affected:

- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat OpenShift Container Platform 4

## Remediation

Refer to the advisory for fix availability.