wifi: mt76: mt7615: drop TXRX_NOTIFY on non-mmio buses

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-68195
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-10 13:20:06 UTC
Updated2026-08-10 13:20:06 UTC
DescriptionIn 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").

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
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 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-rc5 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/f2a72f47c5fb4ba6887e85bbe809d7e5b318d9d5 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
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