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FKIE_CVE-2026-80938

Vulnerability from fkie_nvd - Published: 2026-09-11 20:18 - Updated: 2026-09-14 13:18
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7615: avoid waiting for mac work under the mt76 mutex mt7615_suspend() acquired the mt76 mutex and then called cancel_delayed_work_sync() on mac_work. mt7615_mac_work() acquires the same mutex via mt7615_mutex_acquire() at the top of the worker, so if mac_work is already running and blocked on the mutex, the suspend path deadlocks waiting for the work it holds the mutex against. Flush scan_work and mac_work before taking the mutex, matching the suspend paths in mt7921 and mt7925. scan_work only takes the mt76 spinlock, but moving it keeps the sequence consistent. This also keeps mac_work from running over an already suspended HIF, which the previous split (async cancel under the lock, sync cancel after release) would have allowed.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3114d479f2a1d31b2e6214c395794c6e5715e579
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/33d29aeb4c0eede92622a7d04ea492b94c30f089
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/36c73b86a09f0e51c0f81a75c8945b6c5557ff27
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/44be85af3e1772ffb3332feafedad2a73b22854c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4506e229b2e468b8c64bcf52c50c41a3bf2e633e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bda8324270b1ac91bfba1df8928e0570e29759e8
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ef2ec8b537c3a54e241d693bd03016f80d0d4484
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/mt7615/main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "36c73b86a09f0e51c0f81a75c8945b6c5557ff27",
              "status": "affected",
              "version": "c6bf20109a3fae92402cb76ad709ec5256bcd169",
              "versionType": "git"
            },
            {
              "lessThan": "33d29aeb4c0eede92622a7d04ea492b94c30f089",
              "status": "affected",
              "version": "c6bf20109a3fae92402cb76ad709ec5256bcd169",
              "versionType": "git"
            },
            {
              "lessThan": "ef2ec8b537c3a54e241d693bd03016f80d0d4484",
              "status": "affected",
              "version": "c6bf20109a3fae92402cb76ad709ec5256bcd169",
              "versionType": "git"
            },
            {
              "lessThan": "3114d479f2a1d31b2e6214c395794c6e5715e579",
              "status": "affected",
              "version": "c6bf20109a3fae92402cb76ad709ec5256bcd169",
              "versionType": "git"
            },
            {
              "lessThan": "4506e229b2e468b8c64bcf52c50c41a3bf2e633e",
              "status": "affected",
              "version": "c6bf20109a3fae92402cb76ad709ec5256bcd169",
              "versionType": "git"
            },
            {
              "lessThan": "44be85af3e1772ffb3332feafedad2a73b22854c",
              "status": "affected",
              "version": "c6bf20109a3fae92402cb76ad709ec5256bcd169",
              "versionType": "git"
            },
            {
              "lessThan": "bda8324270b1ac91bfba1df8928e0570e29759e8",
              "status": "affected",
              "version": "c6bf20109a3fae92402cb76ad709ec5256bcd169",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/mt7615/main.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": "5.15.*",
              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.109",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.50",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "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: avoid waiting for mac work under the mt76 mutex\n\nmt7615_suspend() acquired the mt76 mutex and then called\ncancel_delayed_work_sync() on mac_work.  mt7615_mac_work() acquires the\nsame mutex via mt7615_mutex_acquire() at the top of the worker, so if\nmac_work is already running and blocked on the mutex, the suspend path\ndeadlocks waiting for the work it holds the mutex against.\n\nFlush scan_work and mac_work before taking the mutex, matching the\nsuspend paths in mt7921 and mt7925.  scan_work only takes the mt76\nspinlock, but moving it keeps the sequence consistent.  This also keeps\nmac_work from running over an already suspended HIF, which the previous\nsplit (async cancel under the lock, sync cancel after release) would\nhave allowed."
    }
  ],
  "id": "CVE-2026-80938",
  "lastModified": "2026-09-14T13:18:49.910",
  "metrics": {},
  "published": "2026-09-11T20:18:58.053",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3114d479f2a1d31b2e6214c395794c6e5715e579"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/33d29aeb4c0eede92622a7d04ea492b94c30f089"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/36c73b86a09f0e51c0f81a75c8945b6c5557ff27"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/44be85af3e1772ffb3332feafedad2a73b22854c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/4506e229b2e468b8c64bcf52c50c41a3bf2e633e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/bda8324270b1ac91bfba1df8928e0570e29759e8"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ef2ec8b537c3a54e241d693bd03016f80d0d4484"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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