{"api_version":"1","generated_at":"2026-08-12T02:25:38+00:00","cve":"CVE-2026-68195","urls":{"html":"https://cve.report/CVE-2026-68195","api":"https://cve.report/api/cve/CVE-2026-68195.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-68195","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-68195"},"summary":{"title":"wifi: mt76: mt7615: drop TXRX_NOTIFY on non-mmio buses","description":"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\").","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-10 13:20:06","updated_at":"2026-08-10 13:20:06"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/f2a72f47c5fb4ba6887e85bbe809d7e5b318d9d5","name":"https://git.kernel.org/stable/c/f2a72f47c5fb4ba6887e85bbe809d7e5b318d9d5","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/88c98ef247a3126fea9bbbda953a18a2f36c3ea7","name":"https://git.kernel.org/stable/c/88c98ef247a3126fea9bbbda953a18a2f36c3ea7","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b2ab73b8123ce6cf2bc32634bfee4928676ffa66","name":"https://git.kernel.org/stable/c/b2ab73b8123ce6cf2bc32634bfee4928676ffa66","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ab4d213393e846baa6437497f94dda7553cbeda7","name":"https://git.kernel.org/stable/c/ab4d213393e846baa6437497f94dda7553cbeda7","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/39afc46c0243d10b7795e6e6cf4ae91f41732120","name":"https://git.kernel.org/stable/c/39afc46c0243d10b7795e6e6cf4ae91f41732120","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-68195","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-68195","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected eb99cc95c3b6513b495c4839ac4917206705f657 f2a72f47c5fb4ba6887e85bbe809d7e5b318d9d5 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected eb99cc95c3b6513b495c4839ac4917206705f657 88c98ef247a3126fea9bbbda953a18a2f36c3ea7 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected eb99cc95c3b6513b495c4839ac4917206705f657 ab4d213393e846baa6437497f94dda7553cbeda7 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected eb99cc95c3b6513b495c4839ac4917206705f657 b2ab73b8123ce6cf2bc32634bfee4928676ffa66 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected eb99cc95c3b6513b495c4839ac4917206705f657 39afc46c0243d10b7795e6e6cf4ae91f41732120 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.8","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.8 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.148 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.101 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.42 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.6 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2-rc5 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"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":"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":"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-rc5","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.148","versionStartIncluding":"5.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.101","versionStartIncluding":"5.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.42","versionStartIncluding":"5.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.6","versionStartIncluding":"5.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2-rc5","versionStartIncluding":"5.8","vulnerable":true}],"negate":false,"operator":"OR"}]}],"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\")."}],"providerMetadata":{"dateUpdated":"2026-08-10T12:00:13.627Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"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"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-68195","datePublished":"2026-08-10T12:00:13.627Z","dateReserved":"2026-07-30T09:28:09.374Z","dateUpdated":"2026-08-10T12:00:13.627Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-10 13:20:06","lastModifiedDate":"2026-08-10 13:20:06","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"68195","Ordinal":"1","Title":"wifi: mt76: mt7615: drop TXRX_NOTIFY on non-mmio buses","CVE":"CVE-2026-68195","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"68195","Ordinal":"1","NoteData":"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\").","Type":"Description","Title":"wifi: mt76: mt7615: drop TXRX_NOTIFY on non-mmio buses"}]}}}