---
id: CVE-2026-93790
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  wifi: iwlwifi: mvm: fix out-of-bounds tid_data access in BA notif

  mvmsta->tid_data was indexed by the TFD loop counter 'i' instead of
  the actual TID value 'tid'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  wifi: iwlwifi: mvm: fix out-of-bounds tid_data access in BA notif

  mvmsta->tid_data was indexed by the TFD loop counter 'i' instead of
  the actual TID value 'tid'. This …
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 41fd2fec56db2564f02532ed7244e1f69193b4ad <
    35f991d685feafd27255bd33272512c434e52527
  - >-
    Linux >= 41fd2fec56db2564f02532ed7244e1f69193b4ad <
    c48b741277b01b2c3b4ecccedc72fc575b71dc04
  - >-
    Linux >= 41fd2fec56db2564f02532ed7244e1f69193b4ad <
    e8ac5e91b1296f65c3d119fac3fa917ff458f811
  - >-
    Linux >= 41fd2fec56db2564f02532ed7244e1f69193b4ad <
    94d3982806c7f194b23484befde12934dda23064
  - Linux 4.15
published: '2026-09-24'
updated: '2026-10-03'
sourceUpdated: '2026-10-03T11:17:48.677'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-93790'
references:
  - url: 'https://git.kernel.org/stable/c/35f991d685feafd27255bd33272512c434e52527'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/94d3982806c7f194b23484befde12934dda23064'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/c48b741277b01b2c3b4ecccedc72fc575b71dc04'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/e8ac5e91b1296f65c3d119fac3fa917ff458f811'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-93790.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-93790'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2540438'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-93790'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-93790'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-93790.mbox
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
  - score-dispute
epss: 0.00241
epssPercentile: 0.15218
ingestedAt: '2026-09-24T16:47:15.902Z'
cwe:
  - CWE-787
scores:
  nvd: 8.8
  vendor: 5.5
---

## Overview

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

wifi: iwlwifi: mvm: fix out-of-bounds tid_data access in BA notif

mvmsta->tid_data was indexed by the TFD loop counter 'i' instead of
the actual TID value 'tid'. This writes lq_color into a random tid_data
slot unrelated to the BA entry.
Since multi-TID blockack is not really in use, 'i' was always 0 and no
harm was done.
Add a out-of-bound check before accessing 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-2026-93790.json)