CVE-2026-90344
wifi: mac80211: disconnect on CSA to channel 0
Not available
At a glance
- Source
- NVD
- EPSS
- EPSS 0.20 % · percentile 10 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Received
Description
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: disconnect on CSA to channel 0 The refactor for the CSA parsing erroneously equates channel zero and no information present, leading it to ignore a CSA on an AP that advertises a switch to that (invalid) channel. This leads to not disconnecting, which we should. For Intel devices, this can lead to a firmware crash. Fix this by using an int type for the channel number as well as the opclass, and using a (negative) value that cannot be encoded in the element to indicate it's not present.
References
European references
- ENISA EUVD · EUVD-2026-82005
- GCVE · GCVE-0-2026-90344
CERT-FR advisories
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1289 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1253 — Multiples vulnérabilités dans le noyau Linux de Debian · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 21c3f8f95554feff9bed15703e89adbe582e0383 < 099aadb2012d7490bc584cc5075ef11cbc33f2c3 ; affected 21c3f8f95554feff9bed15703e89adbe582e0383 < e7bc5ab93acd1c3f54feeb9fa19ead3530168090 ; affected 21c3f8f95554feff9bed15703e89adbe582e0383 < eef374088450bb91626e133c7172b8a0e969a522 ; affected 21c3f8f95554feff9bed15703e89adbe582e0383 < cf57f0a674cc3e3cda1a789359cc1238b61b9d7d |
| Linux · Linux | affected 6.9 ; unaffected 0 < 6.9 ; unaffected 6.12.110 ≤ 6.12.* ; unaffected 6.18.52 ≤ 6.18.* ; unaffected 7.2.6 ≤ 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 |