---
id: CVE-2026-93793
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  wifi: iwlwifi: mvm: validate TX_CMD response layout

  TX_CMD parsing uses frame_count to walk status entries and then
  read the trailing SCD SSN
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  wifi: iwlwifi: mvm: validate TX_CMD response layout

  TX_CMD parsing uses frame_count to walk status entries and then
  read the trailing SCD SSN. Make the minimum-length …
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 >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    fc14f5fe8a4374ed1088cfbddc1dae4d16c9935b
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    4d942dfc13aec393e003ab28ff58db744c26e6eb
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    8d70881707b47353359df57df12f6de67fdacdd2
  - Linux < 6.12.111
  - Linux < 6.18.53
  - Linux (all versions)
published: '2026-09-24'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T13:17:19.883'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-93793'
references:
  - url: 'https://git.kernel.org/stable/c/4d942dfc13aec393e003ab28ff58db744c26e6eb'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/8d70881707b47353359df57df12f6de67fdacdd2'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/fc14f5fe8a4374ed1088cfbddc1dae4d16c9935b'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-24T16:47:15.901Z'
---

## Overview

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

wifi: iwlwifi: mvm: validate TX_CMD response layout

TX_CMD parsing uses frame_count to walk status entries and then
read the trailing SCD SSN. Make the minimum-length check follow
that exact runtime layout calculation before parsing the payload.

For new TX API, reject TX_CMD responses with frame_count != 1 and
warn/return in the aggregation handler to document that aggregated
accounting is expected via BA notifications.

## Remediation

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