{"id":"CVE-2026-68195","summary":"wifi: mt76: mt7615: drop TXRX_NOTIFY on non-mmio buses","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7615: drop TXRX_NOTIFY on non-mmio buses\n\nPKT_TYPE_TXRX_NOTIFY is an mmio-only event, but mt7615_rx_check() and\nmt7615_queue_rx_skb() dispatch it to mt7615_mac_tx_free() on every bus.\nmt7615_mac_tx_free() cleans the DMA tx queues with\nmt76_queue_tx_cleanup(), which calls queue_ops-\u003etx_cleanup(). Only the\nmmio queue ops implement that callback; on the mt7663 USB and SDIO\nbuses it is NULL, so a TXRX_NOTIFY there calls a NULL pointer in the RX\nworker. Same defect as the mt7921 and mt7925 patches in this series.\n\nDrop the event on non-mmio buses via mt76_is_mmio(), as in\ncommit 5683e1488aa9 (\"wifi: mt76: connac: do not check WED status for\nnon-mmio devices\").","modified":"2026-08-21T03:30:31.191620706Z","published":"2026-08-10T12:00:13.627Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68195.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/1a099d630b8667fa622662b85e35a0ef659fb343"},{"type":"WEB","url":"https://git.kernel.org/stable/c/39afc46c0243d10b7795e6e6cf4ae91f41732120"},{"type":"WEB","url":"https://git.kernel.org/stable/c/664f8bbc61e45e062679da512bf12f8f6fb26a1b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/88c98ef247a3126fea9bbbda953a18a2f36c3ea7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a0b3e8d8726c3830102a18946c766c94c953c7f2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ab4d213393e846baa6437497f94dda7553cbeda7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b2ab73b8123ce6cf2bc32634bfee4928676ffa66"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f2a72f47c5fb4ba6887e85bbe809d7e5b318d9d5"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68195.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-68195"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"eb99cc95c3b6513b495c4839ac4917206705f657"},{"fixed":"664f8bbc61e45e062679da512bf12f8f6fb26a1b"},{"fixed":"1a099d630b8667fa622662b85e35a0ef659fb343"},{"fixed":"a0b3e8d8726c3830102a18946c766c94c953c7f2"},{"fixed":"f2a72f47c5fb4ba6887e85bbe809d7e5b318d9d5"},{"fixed":"88c98ef247a3126fea9bbbda953a18a2f36c3ea7"},{"fixed":"ab4d213393e846baa6437497f94dda7553cbeda7"},{"fixed":"b2ab73b8123ce6cf2bc32634bfee4928676ffa66"},{"fixed":"39afc46c0243d10b7795e6e6cf4ae91f41732120"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-68195.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.8.0"},{"fixed":"5.10.265"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.216"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.183"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.148"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.101"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.42"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.6"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-68195.json"}}],"schema_version":"1.9.0"}