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Back to active CVEs
Unknown severity · Source severity not reportedCVE-2026-98823

wifi: cfg80211: preserve hidden-group beacon IE ownershipCVE-2026-98823

Answer in brief

CVE-2026-98823 records a Unknown severity vulnerability in wifi: cfg80211: preserve hidden-group beacon IE ownership. 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 18, 2026Updated Oct 18, 2026Source checked Oct 18, 2026First seen by HOL Oct 18, 2026Material review Oct 18, 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>=0afd425b1b64251f19b5d8d8b49bf56fefbc643f <49b66110a08e4f926f6393e938f226de2750a08b || >=0afd425b1b64251f19b5d8d8b49bf56fefbc643f <dd7973a4130b0862be38d7e08cc0e874b3d99967 || >=0afd425b1b64251f19b5d8d8b49bf56fefbc643f <5f27581c176f84b52ec0ab9be7b500c10667ef60 || >=0afd425b1b64251f19b5d8d8b49bf56fefbc643f <cc45f313d85533d647ce619326302aad6f797c1449b66110a08e4f926f6393e938f226de2750a08b, dd7973a4130b0862be38d7e08cc0e874b3d99967, 5f27581c176f84b52ec0ab9be7b500c10667ef60, cc45f313d85533d647ce619326302aad6f797c14
Linux/Linuxgeneric5.4Not 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 49b66110a08e4f926f6393e938f226de2750a08b if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 18, 2026

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

  2. Source modified

    Oct 18, 2026

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

  3. First seen by HOL

    Oct 18, 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: cfg80211: preserve hidden-group beacon IE ownership A hidden-group probe-response entry borrows its beacon IEs from the group's beacon entry. cfg80211_update_assoc_bss_entry() can pass such an entry to cfg80211_update_known_bss() when merging scan entries after a channel switch. Copying the borrowed beacon_ies into the associated entry gives the same allocation two owners. Releasing the group's beacon entry can then leave the associated entry pointing to freed IEs, which are freed again when that entry is released. Skip beacon IE replacement when the source entry belongs to a hidden group. Preserve probe-response processing, the subsequent metadata updates, and the existing rejection path for conflicting hidden beacon updates.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Bluetooth: btintel: validate DDC record lengthsSame linux/linux package
  • blk-mq: set RQF_USE_SCHED when the operation is knownSame linux/linux package
  • block: reject polled dio with user integrity metadataSame linux/linux package
  • wifi: mac80211: prevent AP VLAN tx from other interfacesSame linux/linux package
  • wifi: mac80211: validate TX status rate metadataSame linux/linux package
  • rtc: mpfs: fix unchecked devm_clk_get() error pointer in probe()Same linux/linux package

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
Not reported
Source
CVE List V5
Source checked
Oct 18, 2026
References
4 linked sources
Open source record