CVE-2026-68195

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-68195", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-30T09:28:09.374Z", "datePublished": "2026-08-10T12:00:13.627Z", "dateUpdated": "2026-08-19T16:31:11.475Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-19T16:31:11.475Z"}, "descriptions": [{"lang": "en", "value": "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->tx_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\")."}], "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/mt7615/mac.c"], "versions": [{"version": "eb99cc95c3b6513b495c4839ac4917206705f657", "lessThan": "664f8bbc61e45e062679da512bf12f8f6fb26a1b", "status": "affected", "versionType": "git"}, {"version": "eb99cc95c3b6513b495c4839ac4917206705f657", "lessThan": "1a099d630b8667fa622662b85e35a0ef659fb343", "status": "affected", "versionType": "git"}, {"version": "eb99cc95c3b6513b495c4839ac4917206705f657", "lessThan": "a0b3e8d8726c3830102a18946c766c94c953c7f2", "status": "affected", "versionType": "git"}, {"version": "eb99cc95c3b6513b495c4839ac4917206705f657", "lessThan": "f2a72f47c5fb4ba6887e85bbe809d7e5b318d9d5", "status": "affected", "versionType": "git"}, {"version": "eb99cc95c3b6513b495c4839ac4917206705f657", "lessThan": "88c98ef247a3126fea9bbbda953a18a2f36c3ea7", "status": "affected", "versionType": "git"}, {"version": "eb99cc95c3b6513b495c4839ac4917206705f657", "lessThan": "ab4d213393e846baa6437497f94dda7553cbeda7", "status": "affected", "versionType": "git"}, {"version": "eb99cc95c3b6513b495c4839ac4917206705f657", "lessThan": "b2ab73b8123ce6cf2bc32634bfee4928676ffa66", "status": "affected", "versionType": "git"}, {"version": "eb99cc95c3b6513b495c4839ac4917206705f657", "lessThan": "39afc46c0243d10b7795e6e6cf4ae91f41732120", "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/mt7615/mac.c"], "versions": [{"version": "5.8", "status": "affected"}, {"version": "0", "lessThan": "5.8", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.265", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.216", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.183", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.148", "lessThanOrEqual": "6.6.*", "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": "5.8", "versionEndExcluding": "5.10.265"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "5.15.216"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.1.183"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.6.148"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.12.101"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.18.42"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "7.1.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/664f8bbc61e45e062679da512bf12f8f6fb26a1b"}, {"url": "https://git.kernel.org/stable/c/1a099d630b8667fa622662b85e35a0ef659fb343"}, {"url": "https://git.kernel.org/stable/c/a0b3e8d8726c3830102a18946c766c94c953c7f2"}, {"url": "https://git.kernel.org/stable/c/f2a72f47c5fb4ba6887e85bbe809d7e5b318d9d5"}, {"url": "https://git.kernel.org/stable/c/88c98ef247a3126fea9bbbda953a18a2f36c3ea7"}, {"url": "https://git.kernel.org/stable/c/ab4d213393e846baa6437497f94dda7553cbeda7"}, {"url": "https://git.kernel.org/stable/c/b2ab73b8123ce6cf2bc32634bfee4928676ffa66"}, {"url": "https://git.kernel.org/stable/c/39afc46c0243d10b7795e6e6cf4ae91f41732120"}], "title": "wifi: mt76: mt7615: drop TXRX_NOTIFY on non-mmio buses", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/wireless/mediatek/mt76/mt7615/mac.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "664f8bbc61e45e062679da512bf12f8f6fb26a1b", "status": "affected", "version": "eb99cc95c3b6513b495c4839ac4917206705f657", "versionType": "git"}, {"lessThan": "1a099d630b8667fa622662b85e35a0ef659fb343", "status": "affected", "version": "eb99cc95c3b6513b495c4839ac4917206705f657", "versionType": "git"}, {"lessThan": "a0b3e8d8726c3830102a18946c766c94c953c7f2", "status": "affected", "version": "eb99cc95c3b6513b495c4839ac4917206705f657", "versionType": "git"}, {"lessThan": "f2a72f47c5fb4ba6887e85bbe809d7e5b318d9d5", "status": "affected", "version": "eb99cc95c3b6513b495c4839ac4917206705f657", "versionType": "git"}, {"lessThan": "88c98ef247a3126fea9bbbda953a18a2f36c3ea7", "status": "affected", "version": "eb99cc95c3b6513b495c4839ac4917206705f657", "versionType": "git"}, {"lessThan": "ab4d213393e846baa6437497f94dda7553cbeda7", "status": "affected", "version": "eb99cc95c3b6513b495c4839ac4917206705f657", "versionType": "git"}, {"lessThan": "b2ab73b8123ce6cf2bc32634bfee4928676ffa66", "status": "affected", "version": "eb99cc95c3b6513b495c4839ac4917206705f657", "versionType": "git"}, {"lessThan": "39afc46c0243d10b7795e6e6cf4ae91f41732120", "status": "affected", "version": "eb99cc95c3b6513b495c4839ac4917206705f657", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/wireless/mediatek/mt76/mt7615/mac.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.8"}, {"lessThan": "5.8", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.265", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.216", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.183", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.148", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.101", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.42", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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->tx_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\")."}], "id": "CVE-2026-68195", "lastModified": "2026-08-19T17:20:35.693", "metrics": {}, "published": "2026-08-10T13:20:06.903", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1a099d630b8667fa622662b85e35a0ef659fb343"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/39afc46c0243d10b7795e6e6cf4ae91f41732120"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/664f8bbc61e45e062679da512bf12f8f6fb26a1b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/88c98ef247a3126fea9bbbda953a18a2f36c3ea7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a0b3e8d8726c3830102a18946c766c94c953c7f2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ab4d213393e846baa6437497f94dda7553cbeda7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b2ab73b8123ce6cf2bc32634bfee4928676ffa66"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f2a72f47c5fb4ba6887e85bbe809d7e5b318d9d5"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: wifi: mt76: mt7615: drop TXRX_NOTIFY on non-mmio buses", "id": "2513157", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2513157"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-476", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nwifi: mt76: mt7615: drop TXRX_NOTIFY on non-mmio buses\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->tx_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.\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\").", "A flaw was found in the Linux kernel's mt76 Wi-Fi driver, specifically affecting the mt7615 component. This vulnerability occurs because a memory-mapped I/O (MMIO) specific event, PKT_TYPE_TXRX_NOTIFY, is incorrectly processed on non-MMIO buses such as USB and SDIO. When this event is dispatched, it attempts to call a null function pointer in the receive (RX) worker, which can be triggered by a local attacker. This can lead to a system crash, resulting in a denial of service."], "name": "CVE-2026-68195", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-10T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-68195\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-68195\nhttps://lore.kernel.org/linux-cve-announce/2026081010-CVE-2026-68195-6774@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[eb99cc95c3b6513b495c4839ac4917206705f657,f2a72f47c5fb4ba6887e85bbe809d7e5b318d9d5)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[eb99cc95c3b6513b495c4839ac4917206705f657,88c98ef247a3126fea9bbbda953a18a2f36c3ea7)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[eb99cc95c3b6513b495c4839ac4917206705f657,ab4d213393e846baa6437497f94dda7553cbeda7)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[eb99cc95c3b6513b495c4839ac4917206705f657,b2ab73b8123ce6cf2bc32634bfee4928676ffa66)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[eb99cc95c3b6513b495c4839ac4917206705f657,39afc46c0243d10b7795e6e6cf4ae91f41732120)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "5.8"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,5.8)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.148,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.101,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.42,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.6,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2-rc5,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-08-10T14:30:04.128178+00:00", "updated": "2026-08-13T07:00:12.957759+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-476"]}