CVE-2026-68195
wifi: mt76: mt7615: drop TXRX_NOTIFY on non-mmio buses
At a glance
- Source
- NVD
- EPSS
- EPSS 0.21 % · percentile 11 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Received
Description
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7615: drop TXRX_NOTIFY on non-mmio buses PKT_TYPE_TXRX_NOTIFY is an mmio-only event, but mt7615_rx_check() and mt7615_queue_rx_skb() dispatch it to mt7615_mac_tx_free() on every bus. mt7615_mac_tx_free() cleans the DMA tx queues with mt76_queue_tx_cleanup(), which calls queue_ops->tx_cleanup(). Only the mmio queue ops implement that callback; on the mt7663 USB and SDIO buses it is NULL, so a TXRX_NOTIFY there calls a NULL pointer in the RX worker. Same defect as the mt7921 and mt7925 patches in this series. Drop the event on non-mmio buses via mt76_is_mmio(), as in commit 5683e1488aa9 ("wifi: mt76: connac: do not check WED status for non-mmio devices").
References
- https://git.kernel.org/stable/c/664f8bbc61e45e062679da512bf12f8f6fb26a1b
- https://git.kernel.org/stable/c/1a099d630b8667fa622662b85e35a0ef659fb343
- https://git.kernel.org/stable/c/a0b3e8d8726c3830102a18946c766c94c953c7f2
- https://git.kernel.org/stable/c/f2a72f47c5fb4ba6887e85bbe809d7e5b318d9d5
- https://git.kernel.org/stable/c/88c98ef247a3126fea9bbbda953a18a2f36c3ea7
- https://git.kernel.org/stable/c/ab4d213393e846baa6437497f94dda7553cbeda7
- https://git.kernel.org/stable/c/b2ab73b8123ce6cf2bc32634bfee4928676ffa66
- https://git.kernel.org/stable/c/39afc46c0243d10b7795e6e6cf4ae91f41732120
European references
- ENISA EUVD · EUVD-2026-55296
- GCVE · GCVE-0-2026-68195
CERT-FR advisories
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1333 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1286 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1255 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1202 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1164 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1163 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1069 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected eb99cc95c3b6513b495c4839ac4917206705f657 < 664f8bbc61e45e062679da512bf12f8f6fb26a1b ; affected eb99cc95c3b6513b495c4839ac4917206705f657 < 1a099d630b8667fa622662b85e35a0ef659fb343 ; affected eb99cc95c3b6513b495c4839ac4917206705f657 < a0b3e8d8726c3830102a18946c766c94c953c7f2 ; affected eb99cc95c3b6513b495c4839ac4917206705f657 < f2a72f47c5fb4ba6887e85bbe809d7e5b318d9d5 ; affected eb99cc95c3b6513b495c4839ac4917206705f657 < 88c98ef247a3126fea9bbbda953a18a2f36c3ea7 ; affected eb99cc95c3b6513b495c4839ac4917206705f657 < ab4d213393e846baa6437497f94dda7553cbeda7 |
| Linux · Linux | affected 5.8 ; unaffected 0 < 5.8 ; unaffected 5.10.265 ≤ 5.10.* ; unaffected 5.15.216 ≤ 5.15.* ; unaffected 6.1.183 ≤ 6.1.* ; unaffected 6.6.148 ≤ 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 |