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").

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
eb99cc95c3b6513b495c4839ac4917206705f657 affected < f2a72f47c5fb4ba6887e85bbe809d7e5b318d9d5
eb99cc95c3b6513b495c4839ac4917206705f657 affected < 88c98ef247a3126fea9bbbda953a18a2f36c3ea7
eb99cc95c3b6513b495c4839ac4917206705f657 affected < ab4d213393e846baa6437497f94dda7553cbeda7
eb99cc95c3b6513b495c4839ac4917206705f657 affected < b2ab73b8123ce6cf2bc32634bfee4928676ffa66
eb99cc95c3b6513b495c4839ac4917206705f657 affected < 39afc46c0243d10b7795e6e6cf4ae91f41732120
Linux Linux affected
Version Status Constraints
5.8 affected —
0 unaffected < 5.8
6.6.148 unaffected ≤ 6.6.*
6.12.101 unaffected ≤ 6.12.*
6.18.42 unaffected ≤ 6.18.*
7.1.6 unaffected ≤ 7.1.*
7.2-rc5 unaffected ≤ *

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References
Link Providers
https://git.kernel.org/stable/c/39afc46c0243d10b7795e6e6cf4ae91f41732120 cve-icon
https://git.kernel.org/stable/c/88c98ef247a3126fea9bbbda953a18a2f36c3ea7 cve-icon
https://git.kernel.org/stable/c/ab4d213393e846baa6437497f94dda7553cbeda7 cve-icon
https://git.kernel.org/stable/c/b2ab73b8123ce6cf2bc32634bfee4928676ffa66 cve-icon
https://git.kernel.org/stable/c/f2a72f47c5fb4ba6887e85bbe809d7e5b318d9d5 cve-icon
History

Mon, 10 Aug 2026 14:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-476

Mon, 10 Aug 2026 12:30:00 +0000

Type Values Removed Values Added
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").
Title wifi: mt76: mt7615: drop TXRX_NOTIFY on non-mmio buses
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-08-10T12:00:13.627Z

Reserved: 2026-07-30T09:28:09.374Z

Link: CVE-2026-68195

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-10T14:30:04Z

Weaknesses