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wifi: mt76: mt7615: drop TXRX_NOTIFY on non-mmio buses

Type: advisorySource: OSV1 source record

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").

Announced Source revision 1
Original source ↗

CVE-2026-68195

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:CVE-2026-68195

Kernel

Source reference: /affected/1/package/name

Affected versions
Not stated in this record
Fixed versions
5.10.265

Source reference: /affected/1/ranges

5.15.216

Source reference: /affected/1/ranges

6.1.183

Source reference: /affected/1/ranges

6.6.148

Source reference: /affected/1/ranges

6.12.101

Source reference: /affected/1/ranges

6.18.42

Source reference: /affected/1/ranges

7.1.6

Source reference: /affected/1/ranges

Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
        "type": "GIT",
        "events": [
          {
            "introduced": "eb99cc95c3b6513b495c4839ac4917206705f657"
          },
          {
            "fixed": "664f8bbc61e45e062679da512bf12f8f6fb26a1b"
          },
          {
            "fixed": "1a099d630b8667fa622662b85e35a0ef659fb343"
          },
          {
            "fixed": "a0b3e8d8726c3830102a18946c766c94c953c7f2"
          },
          {
            "fixed": "f2a72f47c5fb4ba6887e85bbe809d7e5b318d9d5"
          },
          {
            "fixed": "88c98ef247a3126fea9bbbda953a18a2f36c3ea7"
          },
          {
            "fixed": "ab4d213393e846baa6437497f94dda7553cbeda7"
          },
          {
            "fixed": "b2ab73b8123ce6cf2bc32634bfee4928676ffa66"
          },
          {
            "fixed": "39afc46c0243d10b7795e6e6cf4ae91f41732120"
          }
        ]
      }
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68195.json"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "5.8.0"
          },
          {
            "fixed": "5.10.265"
          }
        ]
      },
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "5.11.0"
          },
          {
            "fixed": "5.15.216"
          }
        ]
      },
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "5.16.0"
          },
          {
            "fixed": "6.1.183"
          }
        ]
      },
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "6.2.0"
          },
          {
            "fixed": "6.6.148"
          }
        ]
      },
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "6.7.0"
          },
          {
            "fixed": "6.12.101"
          }
        ]
      },
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "6.13.0"
          },
          {
            "fixed": "6.18.42"
          }
        ]
      },
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "6.19.0"
          },
          {
            "fixed": "7.1.6"
          }
        ]
      }
    ],
    "package": {
      "name": "Kernel",
      "ecosystem": "Linux"
    },
    "database_specific": {
      "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68195.json"
    }
  }
]
Related CVEs
CVE-2026-68195

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Event
#50804 · Revision 1
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