wifi: mt76: mt7996: hold dev->mt76.mutex while disabling tx worker in SER

{
  "id": "6f104c31d032d53b9a247344f969f5ff74443af1e57a0cd3680777222e6bd887",
  "url": "https://osv.dev/vulnerability/CVE-2026-90367",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "wifi: mt76: mt7996: hold dev->mt76.mutex while disabling tx worker in SER",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7996: hold dev->mt76.mutex while disabling tx worker in SER mt7996_mac_reset_work() parked the tx worker and disabled the RX/TX NAPIs before taking dev->mt76.mutex. mt76_worker_disable()/_enable() are plain kthread park/unpark, not refcounted, and __mt76_set_channel() toggles the same worker and the MT76_RESET bit under the mutex. An L1 SER racing a channel switch could therefore have the worker unparked and MT76_RESET cleared while the reset path resets the DMA rings, corrupting descriptors or tokens. Take the mutex before disabling the worker, as mt7915 does.",
    "evidence": "osv:CVE-2026-90367",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.6.160",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.114",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.52",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.2.6",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-90367",
      "aliases": [
        "CVE-2026-90367"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                  "introduced": "27015b6fbcca836c6dbf196afc266e068af4aeec"
                },
                {
                  "fixed": "bc4f4389f439e808185778d298da36976d13d415"
                },
                {
                  "fixed": "69f23622533a4f054b5c8fdb226c3319ffa017b6"
                },
                {
                  "fixed": "906ad486ba5c4933d82e1ebe0685656390a48450"
                },
                {
                  "fixed": "594c4b7f89f9ea75dc9c50b5e4c4296db4a3d701"
                },
                {
                  "fixed": "6190db312b8230813f529f014b26247c6d9800d0"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90367.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.4.0"
                },
                {
                  "fixed": "6.6.160"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.12.114"
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            {
              "type": "ECOSYSTEM",
              "events": [
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                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.18.52"
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              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
                },
                {
                  "fixed": "7.2.6"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90367.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:37.003792566Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/594c4b7f89f9ea75dc9c50b5e4c4296db4a3d701",
        "https://git.kernel.org/stable/c/6190db312b8230813f529f014b26247c6d9800d0",
        "https://git.kernel.org/stable/c/69f23622533a4f054b5c8fdb226c3319ffa017b6",
        "https://git.kernel.org/stable/c/906ad486ba5c4933d82e1ebe0685656390a48450",
        "https://git.kernel.org/stable/c/bc4f4389f439e808185778d298da36976d13d415",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90367.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-90367",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90367.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-90367",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 504404,
  "published_at": "2026-09-17T16:09:09.43+00:00"
}