Unknown severity · Source severity not reportedCVE-2026-98822

wifi: mac80211: prevent AP VLAN tx from other interfacesCVE-2026-98822

Answer in brief

CVE-2026-98822 records a Unknown severity vulnerability in wifi: mac80211: prevent AP VLAN tx from other interfaces. 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
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=97ffe75791b3e9c0797d5891070e41321c3beccb <fd875e24e8f2b202e3636b3ef8e6060874eca0e5 \|\| >=97ffe75791b3e9c0797d5891070e41321c3beccb <88e96d902efeefbffc34450969f40dc61a0c8a42 \|\| >=97ffe75791b3e9c0797d5891070e41321c3beccb <ad61b9a5febb42e4b96df8d30ad76ddc36dda9d0 \|\| >=97ffe75791b3e9c0797d5891070e41321c3beccb <7f93ca31f7fd9b42e7d692f59514436d448ac908	fd875e24e8f2b202e3636b3ef8e6060874eca0e5, 88e96d902efeefbffc34450969f40dc61a0c8a42, ad61b9a5febb42e4b96df8d30ad76ddc36dda9d0, 7f93ca31f7fd9b42e7d692f59514436d448ac908
Linux/Linuxgeneric	4.1	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to fd875e24e8f2b202e3636b3ef8e6060874eca0e5 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Oct 18, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Oct 18, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Oct 18, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: prevent AP VLAN tx from other interfaces Since the station lookup was factored out of ieee80211_build_hdr(), ieee80211_lookup_ra_sta() uses sta_info_get_bss() for all AP and AP VLAN frames, not only for control port frames. A unicast frame sent on one interface thus matches a station of a different VLAN of the same BSS and is transmitted to it. Only match stations of the interface the frame is sent on, except for control port frames, since those may be sent for VLAN stations directly on the BSS interface.

Quoted source text, attributed separately from HOL analysis.