Answer in brief
CVE-2026-31548 records a High severity (CVSS 7.8) vulnerability in wifi: cfg80211: cancel pmsr_free_wk in cfg80211_pmsr_wdev_down. 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.
CVSS is 7.8. 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 | >=9bb7e0f24e7e7d00daa1219b14539e2e602649b2 <28d3551f8d8cb3aec7497894d94150fe84d20e5e || >=9bb7e0f24e7e7d00daa1219b14539e2e602649b2 <37e776e2e0a523731e2470dce6d563f0e8632a40 || >=9bb7e0f24e7e7d00daa1219b14539e2e602649b2 <d32c07ef1880fe20cf4ab223dbfedc9c0b2816aa || >=9bb7e0f24e7e7d00daa1219b14539e2e602649b2 <a1b7a843f12a0c3e9d3a2ca607ce451916ef42cf || >=9bb7e0f24e7e7d00daa1219b14539e2e602649b2 <72b7ea786b8e570ae11149e9089859a4a8634a13 || >=9bb7e0f24e7e7d00daa1219b14539e2e602649b2 <6dccbc9f3e1d38565dff7730d2b7d1e8b16c9b09 | 28d3551f8d8cb3aec7497894d94150fe84d20e5e, 37e776e2e0a523731e2470dce6d563f0e8632a40, d32c07ef1880fe20cf4ab223dbfedc9c0b2816aa, a1b7a843f12a0c3e9d3a2ca607ce451916ef42cf, 72b7ea786b8e570ae11149e9089859a4a8634a13, 6dccbc9f3e1d38565dff7730d2b7d1e8b16c9b09 |
| Linux/Linuxgeneric | 5.0 | Not reported |
Published upstream
Apr 24, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 16, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 16, 2026
In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: cancel pmsr_free_wk in cfg80211_pmsr_wdev_down When the nl80211 socket that originated a PMSR request is closed, cfg80211_release_pmsr() sets the request's nl_portid to zero and schedules pmsr_free_wk to process the abort asynchronously. If the interface is concurrently torn down before that work runs, cfg80211_pmsr_wdev_down() calls cfg80211_pmsr_process_abort() directly. However, the already- scheduled pmsr_free_wk work item remains pending and may run after the interface has been removed from the driver. This could cause the driver's abort_pmsr callback to operate on a torn-down interface, leading to undefined behavior and potential crashes. Cancel pmsr_free_wk synchronously in cfg80211_pmsr_wdev_down() before calling cfg80211_pmsr_process_abort(). This ensures any pending or in-progress work is drained before interface teardown proceeds, preventing the work from invoking the driver abort callback after the interface is gone.
Quoted source text, attributed separately from HOL analysis.