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wifi: mt76: mt7615: avoid waiting for mac work under the mt76 mutex

Type: advisorySource: Official CVE List1 source record

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.

Announced Source revision 1
Original source ↗

CVE-2026-80938

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: cve:CVE-2026-80938

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "c6bf20109a3fae92402cb76ad709ec5256bcd169",
        "lessThan": "36c73b86a09f0e51c0f81a75c8945b6c5557ff27",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c6bf20109a3fae92402cb76ad709ec5256bcd169",
        "lessThan": "33d29aeb4c0eede92622a7d04ea492b94c30f089",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c6bf20109a3fae92402cb76ad709ec5256bcd169",
        "lessThan": "ef2ec8b537c3a54e241d693bd03016f80d0d4484",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c6bf20109a3fae92402cb76ad709ec5256bcd169",
        "lessThan": "3114d479f2a1d31b2e6214c395794c6e5715e579",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c6bf20109a3fae92402cb76ad709ec5256bcd169",
        "lessThan": "4506e229b2e468b8c64bcf52c50c41a3bf2e633e",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c6bf20109a3fae92402cb76ad709ec5256bcd169",
        "lessThan": "44be85af3e1772ffb3332feafedad2a73b22854c",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c6bf20109a3fae92402cb76ad709ec5256bcd169",
        "lessThan": "bda8324270b1ac91bfba1df8928e0570e29759e8",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/net/wireless/mediatek/mt76/mt7615/main.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "5.8"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "5.8",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.15.221",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.188",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.157",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.109",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.50",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.2.4",
        "versionType": "semver",
        "lessThanOrEqual": "7.2.*"
      },
      {
        "status": "unaffected",
        "version": "7.3",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/net/wireless/mediatek/mt76/mt7615/main.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-80938

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#34897 · Revision 1
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Publisher date
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