Answer in brief
CVE-2026-98702 records a Unknown severity vulnerability in wifi: mac80211: reject invalid 320 MHz CSA bandwidth. 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 | >=21c3f8f95554feff9bed15703e89adbe582e0383 <cf0ddacce173890407ed3fa50c8ea9b3c0cc0e16 || >=21c3f8f95554feff9bed15703e89adbe582e0383 <1892e71aa2e5ee667d87c6e49e3661f5e290303b || >=21c3f8f95554feff9bed15703e89adbe582e0383 <79b3ce0d881cd6e5d4d3496b19f5cc5e7089a56c || >=21c3f8f95554feff9bed15703e89adbe582e0383 <56e236759f0a8dc910c2ae7cd3c161f298ee5794 | cf0ddacce173890407ed3fa50c8ea9b3c0cc0e16, 1892e71aa2e5ee667d87c6e49e3661f5e290303b, 79b3ce0d881cd6e5d4d3496b19f5cc5e7089a56c, 56e236759f0a8dc910c2ae7cd3c161f298ee5794 |
| Linux/Linuxgeneric | 6.9 | Not reported |
Published upstream
Oct 18, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 18, 2026
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: reject invalid 320 MHz CSA bandwidth The HT/VHT channel definition validator can receive a 320 MHz bandwidth indication from a received CSA frame on a non-6 GHz link. It warns for this unsupported width but continues with an uninitialized vht_operation.chan_width, which is then read by ieee80211_chandef_vht_oper(). With panic_on_warn enabled, this lets a received frame panic the kernel. Reject the channel definition before entering the VHT operation conversion. This preserves the existing CSA fallback while avoiding both the warning and the uninitialized read.
Quoted source text, attributed separately from HOL analysis.