wifi: mt76: mt7615: drop TXRX_NOTIFY on non-mmio buses
Summary
| CVE | CVE-2026-68195 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-08-10 13:20:06 UTC |
| Updated | 2026-08-19 17:20:35 UTC |
| 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"). |
Risk And Classification
EPSS: 0.002000000 probability, percentile 0.101930000 (date 2026-08-19)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected eb99cc95c3b6513b495c4839ac4917206705f657 664f8bbc61e45e062679da512bf12f8f6fb26a1b git | Not specified |
| CNA | Linux | Linux | affected eb99cc95c3b6513b495c4839ac4917206705f657 1a099d630b8667fa622662b85e35a0ef659fb343 git | Not specified |
| CNA | Linux | Linux | affected eb99cc95c3b6513b495c4839ac4917206705f657 a0b3e8d8726c3830102a18946c766c94c953c7f2 git | Not specified |
| CNA | Linux | Linux | affected eb99cc95c3b6513b495c4839ac4917206705f657 f2a72f47c5fb4ba6887e85bbe809d7e5b318d9d5 git | Not specified |
| CNA | Linux | Linux | affected eb99cc95c3b6513b495c4839ac4917206705f657 88c98ef247a3126fea9bbbda953a18a2f36c3ea7 git | Not specified |
| CNA | Linux | Linux | affected eb99cc95c3b6513b495c4839ac4917206705f657 ab4d213393e846baa6437497f94dda7553cbeda7 git | Not specified |
| CNA | Linux | Linux | affected eb99cc95c3b6513b495c4839ac4917206705f657 b2ab73b8123ce6cf2bc32634bfee4928676ffa66 git | Not specified |
| CNA | Linux | Linux | affected eb99cc95c3b6513b495c4839ac4917206705f657 39afc46c0243d10b7795e6e6cf4ae91f41732120 git | Not specified |
| CNA | Linux | Linux | affected 5.8 | Not specified |
| CNA | Linux | Linux | unaffected 5.8 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.10.265 5.10.* semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.216 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.183 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.148 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.101 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.42 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.1.6 7.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.2 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/f2a72f47c5fb4ba6887e85bbe809d7e5b318d9d5 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/664f8bbc61e45e062679da512bf12f8f6fb26a1b | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/a0b3e8d8726c3830102a18946c766c94c953c7f2 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/1a099d630b8667fa622662b85e35a0ef659fb343 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/88c98ef247a3126fea9bbbda953a18a2f36c3ea7 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/b2ab73b8123ce6cf2bc32634bfee4928676ffa66 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/ab4d213393e846baa6437497f94dda7553cbeda7 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/39afc46c0243d10b7795e6e6cf4ae91f41732120 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.