---
id: CVE-2026-93791
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  wifi: iwlwifi: mvm: add a check on the tid coming from the firmware

  ba_notif->tid is a firmware-controlled u8 that is used directly
  as an array index into tid_data[] w…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  wifi: iwlwifi: mvm: add a check on the tid coming from the firmware

  ba_notif->tid is a firmware-controlled u8 that is used directly
  as an array index into tid_data[] w…
severity: medium
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= c46e7724bfe9bbff17bc468903a757248b99e4ed <
    0f690fd3b5535d110898b99ae6214f29c9060941
  - >-
    Linux >= c46e7724bfe9bbff17bc468903a757248b99e4ed <
    0b5325a0771674f1d65618de7db3df9d49186a12
  - >-
    Linux >= c46e7724bfe9bbff17bc468903a757248b99e4ed <
    59f64c2839022f41a7867b38f9e38c185ff39283
  - >-
    Linux >= c46e7724bfe9bbff17bc468903a757248b99e4ed <
    0e4c0d83267261cf67ec9690856edf4a56bb7dfc
  - Linux 4.9
published: '2026-09-24'
updated: '2026-10-03'
sourceUpdated: '2026-10-03T11:17:48.800'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-93791'
references:
  - url: 'https://git.kernel.org/stable/c/0b5325a0771674f1d65618de7db3df9d49186a12'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/0e4c0d83267261cf67ec9690856edf4a56bb7dfc'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/0f690fd3b5535d110898b99ae6214f29c9060941'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/59f64c2839022f41a7867b38f9e38c185ff39283'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-93791.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-93791'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2540505'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-93791'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-93791'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-93791.mbox
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
epss: 0.00168
epssPercentile: 0.06047
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-125
---

## Overview

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

wifi: iwlwifi: mvm: add a check on the tid coming from the firmware

ba_notif->tid is a firmware-controlled u8 that is used directly
as an array index into tid_data[] without any validation. Add a
bounds check against IWL_MAX_TID_COUNT before dereferencing the
array.

## 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 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-2026-93791.json)