Answer in brief
CVE-2026-68193 records a Unknown severity vulnerability in wifi: mt76: mt7925: drop TXRX_NOTIFY on non-mmio buses. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=c948b5da6bbec742b433138e3e3f9537a85af2e5 <0c8c4cd0ca60b45c4b05a39e3769b8473d6836eb || >=c948b5da6bbec742b433138e3e3f9537a85af2e5 <9cb72f67e1502aabba51aab9ac04ae7c386ee194 || >=c948b5da6bbec742b433138e3e3f9537a85af2e5 <9677e86a5f7d680fe280a5f8999bc57353e360d7 || >=c948b5da6bbec742b433138e3e3f9537a85af2e5 <feeff151c83e7f0ffcdedcad5343852d23d1f6e1 | 0c8c4cd0ca60b45c4b05a39e3769b8473d6836eb, 9cb72f67e1502aabba51aab9ac04ae7c386ee194, 9677e86a5f7d680fe280a5f8999bc57353e360d7, feeff151c83e7f0ffcdedcad5343852d23d1f6e1 |
| Linux/Linuxgeneric | 6.7 | Not reported |
Published upstream
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 10, 2026
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7925: drop TXRX_NOTIFY on non-mmio buses PKT_TYPE_TXRX_NOTIFY is an mmio-only event, but mt7925_rx_check() and mt7925_queue_rx_skb() dispatch it to mt7925_mac_tx_free() on every bus. mt7925_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 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: mt7925_mac_tx_free+0x58/0x350 [mt7925_common] mt7925_rx_check+0xe2/0x130 [mt7925_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").
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-68193 records a Unknown severity vulnerability in wifi: mt76: mt7925: drop TXRX_NOTIFY on non-mmio buses. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=c948b5da6bbec742b433138e3e3f9537a85af2e5 <0c8c4cd0ca60b45c4b05a39e3769b8473d6836eb || >=c948b5da6bbec742b433138e3e3f9537a85af2e5 <9cb72f67e1502aabba51aab9ac04ae7c386ee194 || >=c948b5da6bbec742b433138e3e3f9537a85af2e5 <9677e86a5f7d680fe280a5f8999bc57353e360d7 || >=c948b5da6bbec742b433138e3e3f9537a85af2e5 <feeff151c83e7f0ffcdedcad5343852d23d1f6e1 | 0c8c4cd0ca60b45c4b05a39e3769b8473d6836eb, 9cb72f67e1502aabba51aab9ac04ae7c386ee194, 9677e86a5f7d680fe280a5f8999bc57353e360d7, feeff151c83e7f0ffcdedcad5343852d23d1f6e1 |
| Linux/Linuxgeneric | 6.7 | Not reported |
Published upstream
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 10, 2026
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7925: drop TXRX_NOTIFY on non-mmio buses PKT_TYPE_TXRX_NOTIFY is an mmio-only event, but mt7925_rx_check() and mt7925_queue_rx_skb() dispatch it to mt7925_mac_tx_free() on every bus. mt7925_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 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: mt7925_mac_tx_free+0x58/0x350 [mt7925_common] mt7925_rx_check+0xe2/0x130 [mt7925_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").
Quoted source text, attributed separately from HOL analysis.