CVE-2026-80938 (GCVE-0-2026-80938)
Vulnerability from cvelistv5
Published
2026-09-11 19:42
Modified
2026-10-19 08:45
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
Impacted products
Vendor Product Version
Linux Linux Version: c6bf20109a3fae92402cb76ad709ec5256bcd169
Version: c6bf20109a3fae92402cb76ad709ec5256bcd169
Version: c6bf20109a3fae92402cb76ad709ec5256bcd169
Version: c6bf20109a3fae92402cb76ad709ec5256bcd169
Version: c6bf20109a3fae92402cb76ad709ec5256bcd169
Version: c6bf20109a3fae92402cb76ad709ec5256bcd169
Version: c6bf20109a3fae92402cb76ad709ec5256bcd169
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "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",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.221",
                  "versionStartIncluding": "5.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.188",
                  "versionStartIncluding": "5.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.157",
                  "versionStartIncluding": "5.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.109",
                  "versionStartIncluding": "5.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.50",
                  "versionStartIncluding": "5.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.4",
                  "versionStartIncluding": "5.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3",
                  "versionStartIncluding": "5.8",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T08:45:22.189Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/36c73b86a09f0e51c0f81a75c8945b6c5557ff27"
        },
        {
          "url": "https://git.kernel.org/stable/c/33d29aeb4c0eede92622a7d04ea492b94c30f089"
        },
        {
          "url": "https://git.kernel.org/stable/c/ef2ec8b537c3a54e241d693bd03016f80d0d4484"
        },
        {
          "url": "https://git.kernel.org/stable/c/3114d479f2a1d31b2e6214c395794c6e5715e579"
        },
        {
          "url": "https://git.kernel.org/stable/c/4506e229b2e468b8c64bcf52c50c41a3bf2e633e"
        },
        {
          "url": "https://git.kernel.org/stable/c/44be85af3e1772ffb3332feafedad2a73b22854c"
        },
        {
          "url": "https://git.kernel.org/stable/c/bda8324270b1ac91bfba1df8928e0570e29759e8"
        }
      ],
      "title": "wifi: mt76: mt7615: avoid waiting for mac work under the mt76 mutex",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-80938",
    "datePublished": "2026-09-11T19:42:11.588Z",
    "dateReserved": "2026-08-26T14:34:25.803Z",
    "dateUpdated": "2026-10-19T08:45:22.189Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.