---
id: CVE-2026-93789
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  wifi: iwlwifi: bound aligned TLV advance in FW parser

  Validate ALIGN(tlv_len, 4) against remaining parser length before
  consuming bytes from the firmware image.

  This …
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  wifi: iwlwifi: bound aligned TLV advance in FW parser

  Validate ALIGN(tlv_len, 4) against remaining parser length before
  consuming bytes from the firmware image.

  This …
severity: medium
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= dd7a2509b3a79b290730a9c6a784bf03fedabb9a <
    61da42fdd21d98ccb8f1ec5224659f3d09202cf4
  - >-
    Linux >= dd7a2509b3a79b290730a9c6a784bf03fedabb9a <
    8c332d45b736d41301b7e07f322785d821265dbc
  - >-
    Linux >= dd7a2509b3a79b290730a9c6a784bf03fedabb9a <
    ce709fcab5e1d4df6d4ba980736dc5908502a40f
  - >-
    Linux >= dd7a2509b3a79b290730a9c6a784bf03fedabb9a <
    4cfadb2e01566bc36d42922fbe18838345087050
  - >-
    Linux >= dd7a2509b3a79b290730a9c6a784bf03fedabb9a <
    528fa9eb14c209533ca26958b76da55e0ce239d8
  - >-
    Linux >= dd7a2509b3a79b290730a9c6a784bf03fedabb9a <
    7aa9097623afb694bc25382a62e14d8e82bf002f
  - >-
    Linux >= dd7a2509b3a79b290730a9c6a784bf03fedabb9a <
    acad742714bdc70e7fd7f234323807c596828213
  - Linux 2.6.35
published: '2026-09-24'
updated: '2026-10-03'
sourceUpdated: '2026-10-03T11:17:48.563'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-93789'
references:
  - url: 'https://git.kernel.org/stable/c/4cfadb2e01566bc36d42922fbe18838345087050'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/528fa9eb14c209533ca26958b76da55e0ce239d8'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/61da42fdd21d98ccb8f1ec5224659f3d09202cf4'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/7aa9097623afb694bc25382a62e14d8e82bf002f'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/8c332d45b736d41301b7e07f322785d821265dbc'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/acad742714bdc70e7fd7f234323807c596828213'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ce709fcab5e1d4df6d4ba980736dc5908502a40f'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-93789.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-93789'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2540405'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-93789'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-93789'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-93789.mbox
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
epss: 0.00173
epssPercentile: 0.0662
ingestedAt: '2026-09-24T16:47:15.902Z'
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-191
---

## Overview

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

wifi: iwlwifi: bound aligned TLV advance in FW parser

Validate ALIGN(tlv_len, 4) against remaining parser length before
consuming bytes from the firmware image.

This avoids length underflow on malformed TLVs.

## Remediation

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

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, … · updated 2026-10-17 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-93789.json)