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CVE-2026-98326
wifi: mac80211: mesh: release the channel if start fails
Overview
Description

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: mesh: release the channel if start fails ieee80211_join_mesh() acquires a channel context and then calls ieee80211_start_mesh(), which can fail. In that case, the chanctx isn't released then interface removal will attempt to unassign it after it's removed from the driver, hitting: wlan0: Failed check-sdata-in-driver check, flags: 0x0 WARNING: net/mac80211/driver-ops.c:366 at drv_unassign_vif_chanctx ieee80211_assign_link_chanctx __ieee80211_link_release_channel ieee80211_link_release_channel ieee80211_teardown_sdata unregister_netdevice_many_notify _cfg80211_unregister_wdev ieee80211_remove_interfaces ieee80211_unregister_hw mac80211_hwsim_del_radio hwsim_exit_net Correctly release the channel on start failures.

Details
INFO

Published Date :

Oct. 6, 2026, 9:18 a.m.

Last Modified :

Oct. 6, 2026, 9:18 a.m.

Remotely Exploit :

No

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67
Impact
Affected Products

The following products are affected by CVE-2026-98326 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
Solution
Release channel context when mesh start fails to prevent driver conflicts.
  • Apply the Linux kernel patch for the mac80211 mesh issue.
  • Ensure channel contexts are properly released on error.
  • Update the Linux kernel to the latest stable version.
  • Test mesh functionality after applying the fix.
References
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2026-98326.

URL Resource
https://git.kernel.org/stable/c/41bee71112db53651ba9a9030de1b843255a4a7f
https://git.kernel.org/stable/c/4a4e3fa77ea36d3419d806fb5883ef425a605a5d
https://git.kernel.org/stable/c/632f7acfe6dac1278a9314eaaab14fada400ddaf
https://git.kernel.org/stable/c/ae97fff6495a8764bc0ef281cfe5444f701e527f
https://git.kernel.org/stable/c/b51f5a310bd6888b90bb9546a8081215dcfe6fbe
https://git.kernel.org/stable/c/f0afcec2129c166e61821d6ae097061155f01b12
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-98326 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-98326 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-98326 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2026-98326 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Oct. 06, 2026

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: mesh: release the channel if start fails ieee80211_join_mesh() acquires a channel context and then calls ieee80211_start_mesh(), which can fail. In that case, the chanctx isn't released then interface removal will attempt to unassign it after it's removed from the driver, hitting: wlan0: Failed check-sdata-in-driver check, flags: 0x0 WARNING: net/mac80211/driver-ops.c:366 at drv_unassign_vif_chanctx ieee80211_assign_link_chanctx __ieee80211_link_release_channel ieee80211_link_release_channel ieee80211_teardown_sdata unregister_netdevice_many_notify _cfg80211_unregister_wdev ieee80211_remove_interfaces ieee80211_unregister_hw mac80211_hwsim_del_radio hwsim_exit_net Correctly release the channel on start failures.
    Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/98xxx/CVE-2026-98326.json">CVE-2026-98326</a>
    Added Reference https://git.kernel.org/stable/c/41bee71112db53651ba9a9030de1b843255a4a7f
    Added Reference https://git.kernel.org/stable/c/4a4e3fa77ea36d3419d806fb5883ef425a605a5d
    Added Reference https://git.kernel.org/stable/c/632f7acfe6dac1278a9314eaaab14fada400ddaf
    Added Reference https://git.kernel.org/stable/c/ae97fff6495a8764bc0ef281cfe5444f701e527f
    Added Reference https://git.kernel.org/stable/c/b51f5a310bd6888b90bb9546a8081215dcfe6fbe
    Added Reference https://git.kernel.org/stable/c/f0afcec2129c166e61821d6ae097061155f01b12
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CVSS
Vulnerability Scoring Details
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