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  4. CVE 2026 98327 wifi mac80211 mesh reset the csa state when
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Back to active CVEs
Unknown severity · Source severity not reportedCVE-2026-98327

wifi: mac80211: mesh: reset the CSA state when leavingCVE-2026-98327

Answer in brief

CVE-2026-98327 records a Unknown severity vulnerability in wifi: mac80211: mesh: reset the CSA state when leaving. 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>=b8456a14e9d2770846fcf74de18ff95b676149a3 <aba8dfb45864441199748c33ce3c1c8ca121c8bd || >=b8456a14e9d2770846fcf74de18ff95b676149a3 <bd3b21145ae2e781daac1bbd19216a63ab4e0cbd || >=b8456a14e9d2770846fcf74de18ff95b676149a3 <ba5bf83a81e8832cb84bb3a2da67512f81f57a02 || >=b8456a14e9d2770846fcf74de18ff95b676149a3 <860134b3af77970e006feab7e5decb8c84771c7faba8dfb45864441199748c33ce3c1c8ca121c8bd, bd3b21145ae2e781daac1bbd19216a63ab4e0cbd, ba5bf83a81e8832cb84bb3a2da67512f81f57a02, 860134b3af77970e006feab7e5decb8c84771c7f
Linux/Linuxgeneric3.13Not 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 aba8dfb45864441199748c33ce3c1c8ca121c8bd 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
Upstream source description

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: mesh: reset the CSA state when leaving ifmsh->csa is allocated in ieee80211_mesh_csa_beacon() and only freed in ieee80211_mesh_finish_csa(), i.e. when the channel switch completes. Leaving the mesh while a switch is still pending therefore leaks it. Additionally, ifmsh->csa_role and ifmsh->chsw_ttl have their state leak in this case, so things can get mixed up in addition to the memory leak. Refactor the reset and call it in ieee80211_stop_mesh() to fix it all.

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: release the channel if start failsSame 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
4 linked sources
Open source record