---
id: CVE-2026-98335
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  wifi: mac80211: abort chanswitch when leaving a mesh

  The code in ieee80211_stop_mesh() leaves CSA active, but leaving
  the mesh released the channel context, so the CSA…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  wifi: mac80211: abort chanswitch when leaving a mesh

  The code in ieee80211_stop_mesh() leaves CSA active, but leaving
  the mesh released the channel context, so the CSA…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= b8456a14e9d2770846fcf74de18ff95b676149a3 <
    bc544ef02327edf61c94d2b6bae9d14b217009b2
  - >-
    Linux >= b8456a14e9d2770846fcf74de18ff95b676149a3 <
    2e1d6e80148495e728a85a9250176f266312e55c
  - >-
    Linux >= b8456a14e9d2770846fcf74de18ff95b676149a3 <
    d222fdc973bb8dbf0357772bd9042ffdc8291939
  - >-
    Linux >= b8456a14e9d2770846fcf74de18ff95b676149a3 <
    ac7472a24bd433b81c06582835dd1d5547c10da9
  - Linux 3.13
published: '2026-10-06'
updated: '2026-10-06'
sourceUpdated: '2026-10-06T09:18:26.040'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98335'
references:
  - url: 'https://git.kernel.org/stable/c/2e1d6e80148495e728a85a9250176f266312e55c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ac7472a24bd433b81c06582835dd1d5547c10da9'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/bc544ef02327edf61c94d2b6bae9d14b217009b2'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/d222fdc973bb8dbf0357772bd9042ffdc8291939'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-06T08:50:17.402Z'
---

## Overview

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

wifi: mac80211: abort chanswitch when leaving a mesh

The code in ieee80211_stop_mesh() leaves CSA active, but leaving
the mesh released the channel context, so the CSA finalize work
crashes:

  Oops: general protection fault, probably for non-canonical address
        0xdffffc0000000003
  KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f]
  RIP: 0010:ieee80211_put_srates_elem+0x42/0x640 net/mac80211/util.c:3272
  Call Trace:
   ieee80211_mesh_build_beacon+0xa83/0x1b50 net/mac80211/mesh.c:1093
   ieee80211_mesh_rebuild_beacon+0xc7/0x170 net/mac80211/mesh.c:1147
   ieee80211_mesh_finish_csa+0x131/0x210 net/mac80211/mesh.c:1542
   ieee80211_set_after_csa_beacon net/mac80211/cfg.c:4085 [inline]
   __ieee80211_csa_finalize net/mac80211/cfg.c:4133 [inline]
   ieee80211_csa_finalize+0x633/0x1150 net/mac80211/cfg.c:4155
   cfg80211_wiphy_work+0x2ab/0x450 net/wireless/core.c:438

Abort the channel switch properly.

## Remediation

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