wifi: mac80211: reset the AP_VLAN tailroom counter on ifdown (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.22 % · percentile 13 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Received
Description
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: reset the AP_VLAN tailroom counter on ifdown On ifup, AP_VLAN interfaces get crypto_tx_tailroom_needed_cnt from the AP interface, but it's never decremented again unless the AP is also brought down. Thus, bringing the same AP_VLAN up again will increment the counter again and eventually hit the sanity check: WARN_ON_ONCE(sdata->crypto_tx_tailroom_needed_cnt != master->crypto_tx_tailroom_needed_cnt); Reset it on ifdown to avoid that.
References
- https://git.kernel.org/stable/c/b0b32d3f163d24ea7134380666193bf398e9dc0b
- https://git.kernel.org/stable/c/f6b34a7d64324faf28eedc0f8678b0f832f1cc36
- https://git.kernel.org/stable/c/304a874670a0b6ab5589a7f60b4af0251797b121
- https://git.kernel.org/stable/c/7775759e3cb35ef5a571b2d877c2a9b70a5d5f08
- https://git.kernel.org/stable/c/3d76b45e8432c0d75fcb9e90d92eaa3176898adf
- https://git.kernel.org/stable/c/4b54d01b48445b66c9e576de92b90a3a3ae7b34a
- https://git.kernel.org/stable/c/875835377d8d62c849b4eb03a7abfafa71d7668f
- https://git.kernel.org/stable/c/4504f3960dc4501c73be9f99eabda2e26e9db41e
European references
- ENISA EUVD · EUVD-2026-101071
- GCVE · GCVE-0-2026-98422
CERT-FR advisories
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1375 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1374 — Multiples vulnérabilités dans le noyau Linux de Debian · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected f9dca80b98caac8b4bfb43a2edf1e9f877ccf322 < b0b32d3f163d24ea7134380666193bf398e9dc0b ; affected f9dca80b98caac8b4bfb43a2edf1e9f877ccf322 < f6b34a7d64324faf28eedc0f8678b0f832f1cc36 ; affected f9dca80b98caac8b4bfb43a2edf1e9f877ccf322 < 304a874670a0b6ab5589a7f60b4af0251797b121 ; affected f9dca80b98caac8b4bfb43a2edf1e9f877ccf322 < 7775759e3cb35ef5a571b2d877c2a9b70a5d5f08 ; affected f9dca80b98caac8b4bfb43a2edf1e9f877ccf322 < 3d76b45e8432c0d75fcb9e90d92eaa3176898adf ; affected f9dca80b98caac8b4bfb43a2edf1e9f877ccf322 < 4b54d01b48445b66c9e576de92b90a3a3ae7b34a |
| Linux · Linux | affected 4.1 ; unaffected 0 < 4.1 ; unaffected 5.10.271 ≤ 5.10.* ; unaffected 5.15.222 ≤ 5.15.* ; unaffected 6.1.189 ≤ 6.1.* ; unaffected 6.6.158 ≤ 6.6.* |
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 |