Answer in brief
CVE-2026-93804 records a Unknown severity vulnerability in wifi: mac80211: ibss: wait for in-flight TX on disconnect. The current sources do not mark it as known exploited. The current feed maps 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). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <20a3fb5e1a95caa34896853ca17a50d21c754969 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <b3451e6971248250312ad32dd7f63cc9f0a925f5 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d0e69d9afa59b93c30294eba89b1f15f69e91105 || >=0 <6.12.111 || >=0 <6.18.53 | 20a3fb5e1a95caa34896853ca17a50d21c754969, b3451e6971248250312ad32dd7f63cc9f0a925f5, d0e69d9afa59b93c30294eba89b1f15f69e91105, 6.12.111, 6.18.53 |
Published upstream
Sep 24, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 24, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 25, 2026
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: ibss: wait for in-flight TX on disconnect While leaving an IBSS in ieee80211_ibss_disconnect() mac80211 flushes stations, turns the carrier off and immediately tells the driver to leave as well. While there may be synchronize_net() in station flush and in this code later, packets can still be transmitted due to cross-CPU race conditions after carrier off is set. Therefore, it's possible for a race to happen where a TX to the driver occurs while or after telling it to leave the IBSS. This can be confusing to drivers, and in the case of iwlwifi leads to an attempt to use invalid queues. Move netif_carrier_off() to occur before sta_info_flush() during IBSS disconnect, and add synchronize_net() if flushing didn't, so that the synchronize_net() always happens between turning the carrier off and telling the driver, avoiding this race.
Quoted source text, attributed separately from HOL analysis.