Answer in brief
CVE-2026-98340 records a Unknown severity vulnerability in wifi: cfg80211: only group hidden BSSes with beacon entries. 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.
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.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=4593c4cbe1c96b3995727dc42f6aa103f4ff5afc <4cd6a518ce7527284bbc9baab5fa2453a7d477c2 || >=4593c4cbe1c96b3995727dc42f6aa103f4ff5afc <74ed0d992f392c75e1969415527e06df3f7a4034 || >=4593c4cbe1c96b3995727dc42f6aa103f4ff5afc <3658093df69849daf4f813a8f087f358e13be203 || >=4593c4cbe1c96b3995727dc42f6aa103f4ff5afc <73365b81630b57e1a1f9d50dc87281797855c2ac || >=4593c4cbe1c96b3995727dc42f6aa103f4ff5afc <7405dd19bda4537a2843637d8d7bed1efd4776cf || >=4593c4cbe1c96b3995727dc42f6aa103f4ff5afc <86235be788094131912e9bd8412b358d91d99f49 || >=4593c4cbe1c96b3995727dc42f6aa103f4ff5afc <332ea1502c46f53375cb109fa82bfaff818f3a41 || >=4593c4cbe1c96b3995727dc42f6aa103f4ff5afc <068843ed0902c552a13860c5ec6b2ca65b57a065 | 4cd6a518ce7527284bbc9baab5fa2453a7d477c2, 74ed0d992f392c75e1969415527e06df3f7a4034, 3658093df69849daf4f813a8f087f358e13be203, 73365b81630b57e1a1f9d50dc87281797855c2ac, 7405dd19bda4537a2843637d8d7bed1efd4776cf, 86235be788094131912e9bd8412b358d91d99f49, 332ea1502c46f53375cb109fa82bfaff818f3a41, 068843ed0902c552a13860c5ec6b2ca65b57a065 |
| Linux/Linuxgeneric | 3.9 | Not reported |
Published upstream
Oct 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 6, 2026
In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: only group hidden BSSes with beacon entries When a probe response for an unknown BSS comes in, __cfg80211_bss_update() looks for an existing entry with the same BSSID and a hidden (zero-length or NUL-filled) SSID, and if it finds one it groups them, using the beacon IEs from the existing entry. But that could find another entry without a beacon, if it was also from a probe response (with SSID), so there's a group without beacon elements. If a beacon with a hidden SSID for that BSSID arrives later, cfg80211_combine_bsses() goes looking for the probe response entries that belong to it - i.e. entries with the same BSSID and channel that have no beacon IEs - and finds those two. They are already grouped with each other, so it hits its WARN_ON_ONCE(bss->pub.hidden_beacon_bss) WARN_ON_ONCE(!list_empty(&bss->hidden_list)) which are there because an entry without beacon elements is not supposed to be part of a group yet. Only combine entries when a beacon was already received, ones that are kept separate will be combined when a beacon arrives.
Quoted source text, attributed separately from HOL analysis.