---
id: CVE-2026-93788
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  wifi: iwlwifi: acpi: validate WGDS table revision index

  Check tbl_rev bounds before BIT(tbl_rev) to avoid undefined shifts when
  firmware reports an invalid revision va…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  wifi: iwlwifi: acpi: validate WGDS table revision index

  Check tbl_rev bounds before BIT(tbl_rev) to avoid undefined shifts when
  firmware reports an invalid revision va…
severity: medium
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 97f8a3d1610b1f50013de1e632b007cbfd7459d8 <
    4f2ec7a0b3ff148cb13e14cb26ac43523df8b9f5
  - >-
    Linux >= 97f8a3d1610b1f50013de1e632b007cbfd7459d8 <
    9096509e63ddd349eb075ec447d1a714e87e17a4
  - >-
    Linux >= 97f8a3d1610b1f50013de1e632b007cbfd7459d8 <
    2fc98ab6fe8acabd13eb09dc17426a33cf9f27f7
  - >-
    Linux >= 97f8a3d1610b1f50013de1e632b007cbfd7459d8 <
    346a558491241cbe8fef82b3d8f62d1a6b6bf61f
  - >-
    Linux >= 97f8a3d1610b1f50013de1e632b007cbfd7459d8 <
    954e821f42aaca56073ca830c5fd4bcf1a89048c
  - Linux 5.16
published: '2026-09-24'
updated: '2026-10-03'
sourceUpdated: '2026-10-03T11:17:48.457'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-93788'
references:
  - url: 'https://git.kernel.org/stable/c/2fc98ab6fe8acabd13eb09dc17426a33cf9f27f7'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/346a558491241cbe8fef82b3d8f62d1a6b6bf61f'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/4f2ec7a0b3ff148cb13e14cb26ac43523df8b9f5'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/9096509e63ddd349eb075ec447d1a714e87e17a4'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/954e821f42aaca56073ca830c5fd4bcf1a89048c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-93788.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-93788'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2540473'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-93788'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-93788'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-93788.mbox
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
epss: 0.00168
epssPercentile: 0.06056
ingestedAt: '2026-09-24T16:47:15.903Z'
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-1335
---

## Overview

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

wifi: iwlwifi: acpi: validate WGDS table revision index

Check tbl_rev bounds before BIT(tbl_rev) to avoid undefined shifts when
firmware reports an invalid revision value.

## Remediation

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

## Vendor advisories

- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 10, 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 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-10-17 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-93788.json)