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CVE-2026-68194: Linux

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CVSS

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Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

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    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7921: drop TXRX_NOTIFY on non-mmio buses PKT_TYPE_TXRX_NOTIFY is an mmio-only event, but mt7921_rx_check() and mt7921_queue_rx_skb() dispatch it to mt7921_mac_tx_free() on every bus. mt7921_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 USB and SDIO it is NULL, so a TXRX_NOTIFY there calls a NULL pointer in the RX worker: BUG: kernel NULL pointer dereference, address: 0000000000000000 RIP: 0010:0x0 Call Trace: mt7921_mac_tx_free+0x64/0x310 [mt7921_common] mt7921_rx_check+0x5f/0xf0 [mt7921_common] mt76u_rx_worker+0x1b9/0x620 [mt76_usb] 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").

    Засегнати продукти

    • Linux Linux: 48fab5bbef4092d925ab3214773ad12e68807223 преди 7003a2cbddd7917933c1f169c7874cfa6ab852c3; 48fab5bbef4092d925ab3214773ad12e68807223 преди ef2ee5f820c3ef87643b51e960c20b4a14d8336b; 48fab5bbef4092d925ab3214773ad12e68807223 преди ecf995b828191829ba4a87169bccabcbeb5c9c32; 48fab5bbef4092d925ab3214773ad12e68807223 преди 263816e92e8d66c81c98ccab2b5d2191ed08ec71; 48fab5bbef4092d925ab3214773ad12e68807223 преди 24475d2ddc8d8dfd82f4d2be0d951401f86911a6; 48fab5bbef4092d925ab3214773ad12e68807223 преди da4082e91acabc1498611ed8ccc53f0610baefc6
    • Linux Linux: 5.16; преди 5.16; 6.1.183 до 6.1.*; 6.6.148 до 6.6.*; 6.12.101 до 6.12.*; 6.18.42 до 6.18.*; 7.1.6 до 7.1.*; от 7.2 нататък

    История

    • 10 август 2026 Публикувано

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    CVE-2026-68194: Linux | freedomonline.bg