{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-68193",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-07-30T09:28:09.373Z",
        "datePublished": "2026-08-10T12:00:11.110Z",
        "dateUpdated": "2026-08-17T05:00:36.015Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-17T05:00:36.015Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7925: drop TXRX_NOTIFY on non-mmio buses\n\nPKT_TYPE_TXRX_NOTIFY is an mmio-only event, but mt7925_rx_check() and\nmt7925_queue_rx_skb() dispatch it to mt7925_mac_tx_free() on every bus.\nmt7925_mac_tx_free() cleans the DMA tx queues with\nmt76_queue_tx_cleanup(), which calls queue_ops->tx_cleanup(). Only the\nmmio queue ops implement that callback; on USB it is NULL, so a\nTXRX_NOTIFY there calls a NULL pointer in the RX worker:\n\n  BUG: kernel NULL pointer dereference, address: 0000000000000000\n  RIP: 0010:0x0\n  Call Trace:\n   mt7925_mac_tx_free+0x58/0x350 [mt7925_common]\n   mt7925_rx_check+0xe2/0x130 [mt7925_common]\n   mt76u_rx_worker+0x1b9/0x620 [mt76_usb]\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\")."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/wireless/mediatek/mt76/mt7925/mac.c"
                    ],
                    "versions": [
                        {
                            "version": "c948b5da6bbec742b433138e3e3f9537a85af2e5",
                            "lessThan": "0c8c4cd0ca60b45c4b05a39e3769b8473d6836eb",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c948b5da6bbec742b433138e3e3f9537a85af2e5",
                            "lessThan": "9cb72f67e1502aabba51aab9ac04ae7c386ee194",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c948b5da6bbec742b433138e3e3f9537a85af2e5",
                            "lessThan": "9677e86a5f7d680fe280a5f8999bc57353e360d7",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c948b5da6bbec742b433138e3e3f9537a85af2e5",
                            "lessThan": "feeff151c83e7f0ffcdedcad5343852d23d1f6e1",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/wireless/mediatek/mt76/mt7925/mac.c"
                    ],
                    "versions": [
                        {
                            "version": "6.7",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.7",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.101",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.42",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.6",
                            "lessThanOrEqual": "7.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.7",
                                    "versionEndExcluding": "6.12.101"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.7",
                                    "versionEndExcluding": "6.18.42"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.7",
                                    "versionEndExcluding": "7.1.6"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.7",
                                    "versionEndExcluding": "7.2"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/0c8c4cd0ca60b45c4b05a39e3769b8473d6836eb"
                },
                {
                    "url": "https://git.kernel.org/stable/c/9cb72f67e1502aabba51aab9ac04ae7c386ee194"
                },
                {
                    "url": "https://git.kernel.org/stable/c/9677e86a5f7d680fe280a5f8999bc57353e360d7"
                },
                {
                    "url": "https://git.kernel.org/stable/c/feeff151c83e7f0ffcdedcad5343852d23d1f6e1"
                }
            ],
            "title": "wifi: mt76: mt7925: drop TXRX_NOTIFY on non-mmio buses",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}