wifi: mac80211: reject invalid 320 MHz CSA bandwidth (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.17 % · percentile 6 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Received
Description
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.
References
European references
- ENISA EUVD · EUVD-2026-103956
- GCVE · GCVE-0-2026-98702
CERT-FR advisories
- CERTFR-2026-AVI-1375 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 21c3f8f95554feff9bed15703e89adbe582e0383 < cf0ddacce173890407ed3fa50c8ea9b3c0cc0e16 ; affected 21c3f8f95554feff9bed15703e89adbe582e0383 < 1892e71aa2e5ee667d87c6e49e3661f5e290303b ; affected 21c3f8f95554feff9bed15703e89adbe582e0383 < 79b3ce0d881cd6e5d4d3496b19f5cc5e7089a56c ; affected 21c3f8f95554feff9bed15703e89adbe582e0383 < 56e236759f0a8dc910c2ae7cd3c161f298ee5794 |
| Linux · Linux | affected 6.9 ; unaffected 0 < 6.9 ; unaffected 6.12.113 ≤ 6.12.* ; unaffected 6.18.56 ≤ 6.18.* ; unaffected 7.2.10 ≤ 7.2.* ; unaffected 7.3 ≤ * |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |