---
id: CVE-2026-98194
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  wifi: libertas_tf: fix UAF in lbtf_free_adapter()

  lbtf_free_adapter() calls lbtf_free_cmd_buffer() to free the command
  buffers before calling timer_delete_sync() to wa…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  wifi: libertas_tf: fix UAF in lbtf_free_adapter()

  lbtf_free_adapter() calls lbtf_free_cmd_buffer() to free the command
  buffers before calling timer_delete_sync() to wa…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 06b16ae5319251c26377afcb401e46056d5673f4 <
    3fb3663260ec396f86b733aab9f81fac6669d2fa
  - >-
    Linux >= 06b16ae5319251c26377afcb401e46056d5673f4 <
    f6c3fa0d17ca0c9e6033bb45f52e33b27a9a40e6
  - >-
    Linux >= 06b16ae5319251c26377afcb401e46056d5673f4 <
    b4745d6063758c681d33affca9733bbd356b6ea1
  - >-
    Linux >= 06b16ae5319251c26377afcb401e46056d5673f4 <
    41b1a4d545ec348b7d5324b6d4f4c6a3e0326d46
  - >-
    Linux >= 06b16ae5319251c26377afcb401e46056d5673f4 <
    2b99bfc5a127ce8cd6a887d82815fc2e712f365b
  - >-
    Linux >= 06b16ae5319251c26377afcb401e46056d5673f4 <
    e82536aad653e27c8ca7a8e0f6f816bc3f853ec3
  - >-
    Linux >= 06b16ae5319251c26377afcb401e46056d5673f4 <
    04c837d413dc11a91e0275b08b9e35a6c111175e
  - >-
    Linux >= 06b16ae5319251c26377afcb401e46056d5673f4 <
    bbb9a0ab96d44a64529aafc7a16de460a1712f6a
  - Linux 2.6.28
published: '2026-10-06'
updated: '2026-10-06'
sourceUpdated: '2026-10-06T09:18:04.800'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98194'
references:
  - url: 'https://git.kernel.org/stable/c/04c837d413dc11a91e0275b08b9e35a6c111175e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/2b99bfc5a127ce8cd6a887d82815fc2e712f365b'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/3fb3663260ec396f86b733aab9f81fac6669d2fa'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/41b1a4d545ec348b7d5324b6d4f4c6a3e0326d46'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/b4745d6063758c681d33affca9733bbd356b6ea1'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/bbb9a0ab96d44a64529aafc7a16de460a1712f6a'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/e82536aad653e27c8ca7a8e0f6f816bc3f853ec3'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/f6c3fa0d17ca0c9e6033bb45f52e33b27a9a40e6'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-06T08:50:17.448Z'
---

## Overview

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

wifi: libertas_tf: fix UAF in lbtf_free_adapter()

lbtf_free_adapter() calls lbtf_free_cmd_buffer() to free the command
buffers before calling timer_delete_sync() to wait for the command
timer callback.  If the timer callback (command_timer_fn) is already
running when lbtf_free_cmd_buffer() frees the command array, the
callback dereferences priv->cur_cmd->cmdbuf which points to freed
memory.

Swap the order so that timer_delete_sync() runs first, ensuring any
in-flight callback has completed before the command buffers are freed.

## Remediation

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