CVE-2026-68195 (GCVE-0-2026-68195)

Vulnerability from cvelistv5 – Published: 2026-08-10 12:00 – Updated: 2026-08-19 16:31
VLAI
Title
wifi: mt76: mt7615: drop TXRX_NOTIFY on non-mmio buses
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7615: drop TXRX_NOTIFY on non-mmio buses PKT_TYPE_TXRX_NOTIFY is an mmio-only event, but mt7615_rx_check() and mt7615_queue_rx_skb() dispatch it to mt7615_mac_tx_free() on every bus. mt7615_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 the mt7663 USB and SDIO buses it is NULL, so a TXRX_NOTIFY there calls a NULL pointer in the RX worker. Same defect as the mt7921 and mt7925 patches in this series. 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").
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: eb99cc95c3b6513b495c4839ac4917206705f657 , < 664f8bbc61e45e062679da512bf12f8f6fb26a1b (git)
Affected: eb99cc95c3b6513b495c4839ac4917206705f657 , < 1a099d630b8667fa622662b85e35a0ef659fb343 (git)
Affected: eb99cc95c3b6513b495c4839ac4917206705f657 , < a0b3e8d8726c3830102a18946c766c94c953c7f2 (git)
Affected: eb99cc95c3b6513b495c4839ac4917206705f657 , < f2a72f47c5fb4ba6887e85bbe809d7e5b318d9d5 (git)
Affected: eb99cc95c3b6513b495c4839ac4917206705f657 , < 88c98ef247a3126fea9bbbda953a18a2f36c3ea7 (git)
Affected: eb99cc95c3b6513b495c4839ac4917206705f657 , < ab4d213393e846baa6437497f94dda7553cbeda7 (git)
Affected: eb99cc95c3b6513b495c4839ac4917206705f657 , < b2ab73b8123ce6cf2bc32634bfee4928676ffa66 (git)
Affected: eb99cc95c3b6513b495c4839ac4917206705f657 , < 39afc46c0243d10b7795e6e6cf4ae91f41732120 (git)
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Linux Linux Affected: 5.8
Unaffected: 0 , < 5.8 (semver)
Unaffected: 5.10.265 , ≤ 5.10.* (semver)
Unaffected: 5.15.216 , ≤ 5.15.* (semver)
Unaffected: 6.1.183 , ≤ 6.1.* (semver)
Unaffected: 6.6.148 , ≤ 6.6.* (semver)
Unaffected: 6.12.101 , ≤ 6.12.* (semver)
Unaffected: 6.18.42 , ≤ 6.18.* (semver)
Unaffected: 7.1.6 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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          "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-\u003etx_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\")."
        }
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/39afc46c0243d10b7795e6e6cf4ae91f41732120"
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      "title": "wifi: mt76: mt7615: drop TXRX_NOTIFY on non-mmio buses",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-68195",
    "datePublished": "2026-08-10T12:00:13.627Z",
    "dateReserved": "2026-07-30T09:28:09.374Z",
    "dateUpdated": "2026-08-19T16:31:11.475Z",
    "state": "PUBLISHED"
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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\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/net/wireless/mediatek/mt76/mt7615/mac.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"eb99cc95c3b6513b495c4839ac4917206705f657\",\"lessThan\":\"664f8bbc61e45e062679da512bf12f8f6fb26a1b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"eb99cc95c3b6513b495c4839ac4917206705f657\",\"lessThan\":\"1a099d630b8667fa622662b85e35a0ef659fb343\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"eb99cc95c3b6513b495c4839ac4917206705f657\",\"lessThan\":\"a0b3e8d8726c3830102a18946c766c94c953c7f2\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"eb99cc95c3b6513b495c4839ac4917206705f657\",\"lessThan\":\"f2a72f47c5fb4ba6887e85bbe809d7e5b318d9d5\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"eb99cc95c3b6513b495c4839ac4917206705f657\",\"lessThan\":\"88c98ef247a3126fea9bbbda953a18a2f36c3ea7\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"eb99cc95c3b6513b495c4839ac4917206705f657\",\"lessThan\":\"ab4d213393e846baa6437497f94dda7553cbeda7\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"eb99cc95c3b6513b495c4839ac4917206705f657\",\"lessThan\":\"b2ab73b8123ce6cf2bc32634bfee4928676ffa66\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"eb99cc95c3b6513b495c4839ac4917206705f657\",\"lessThan\":\"39afc46c0243d10b7795e6e6cf4ae91f41732120\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/net/wireless/mediatek/mt76/mt7615/mac.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.8\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.8\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.265\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.216\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.183\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.148\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.101\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.42\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.6\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"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\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-11T15:31:46+00:00",
      "cve": "CVE-2026-68195",
      "id": "CVE-2026-68195",
      "initial_release_date": "2026-08-10T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: wifi: mt76: mt7615: drop TXRX_NOTIFY on non-mmio buses",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-68195.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-13T01:28:17Z",
      "cve": "CVE-2026-68195",
      "id": "CVE-2026-68195",
      "initial_release_date": "2026-08-12T16:22:51Z",
      "product_status:known_affected": "132",
      "product_status:known_not_affected": "164",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-68195",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-68195.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.