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  4. CVE 2026 98326 wifi mac80211 mesh release the channel if start
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Back to active CVEs
Unknown severity · Source severity not reportedCVE-2026-98326

wifi: mac80211: mesh: release the channel if start failsCVE-2026-98326

Answer in brief

CVE-2026-98326 records a Unknown severity vulnerability in wifi: mac80211: mesh: release the channel if start fails. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 6, 2026Updated Oct 6, 2026Source checked Oct 6, 2026First seen by HOL Oct 6, 2026Material review Oct 6, 2026
Upstream Advisory

Key facts

Risk
Unknown severitySource severity not reported
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Linux/Linuxgeneric>=2b5e19677592c167d012c2d129407f39d2bdeb8d <f0afcec2129c166e61821d6ae097061155f01b12 || >=2b5e19677592c167d012c2d129407f39d2bdeb8d <b51f5a310bd6888b90bb9546a8081215dcfe6fbe || >=2b5e19677592c167d012c2d129407f39d2bdeb8d <632f7acfe6dac1278a9314eaaab14fada400ddaf || >=2b5e19677592c167d012c2d129407f39d2bdeb8d <41bee71112db53651ba9a9030de1b843255a4a7f || >=2b5e19677592c167d012c2d129407f39d2bdeb8d <4a4e3fa77ea36d3419d806fb5883ef425a605a5d || >=2b5e19677592c167d012c2d129407f39d2bdeb8d <ae97fff6495a8764bc0ef281cfe5444f701e527ff0afcec2129c166e61821d6ae097061155f01b12, b51f5a310bd6888b90bb9546a8081215dcfe6fbe, 632f7acfe6dac1278a9314eaaab14fada400ddaf, 41bee71112db53651ba9a9030de1b843255a4a7f, 4a4e3fa77ea36d3419d806fb5883ef425a605a5d, ae97fff6495a8764bc0ef281cfe5444f701e527f
Linux/Linuxgeneric3.9Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
  2. 2Review the reported fix. Update Linux/Linux to f0afcec2129c166e61821d6ae097061155f01b12 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 6, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 6, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 6, 2026

Sources and claim methodology

  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • wifi: mac80211: set up the TX info early to fix failure pathsSame linux/linux package
  • wifi: mac80211: mesh: reset the CSA state when leavingSame linux/linux package
  • wifi: mac80211: add HE 6 GHz capability in the scan elems lenSame linux/linux package
  • wifi: mac80211: don't allow injecting frames wider than the chanctxSame linux/linux package
  • wifi: cfg80211: get the wiphy out of a dying network namespaceSame linux/linux package
  • wifi: mac80211: unlist vifs when their netdev is unregisteredSame linux/linux package

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
Not reported
Source
CVE List V5
Source checked
Oct 6, 2026
References
6 linked sources
Open source record