CVE-2026-53097 (GCVE-0-2026-53097)
Vulnerability from cvelistv5
Published
2026-06-24 16:30
Modified
2026-06-24 16:30
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7996: fix use-after-free bugs in mt7996_mac_dump_work() When the mt7996 pci chip is detaching, the mt7996_crash_data is released in mt7996_coredump_unregister(). However, the work item dump_work may still be running or pending, leading to UAF bugs when the already freed crash_data is dereferenced again in mt7996_mac_dump_work(). The race condition can occur as follows: CPU 0 (removal path) | CPU 1 (workqueue) mt7996_pci_remove() | mt7996_sys_recovery_set() mt7996_unregister_device() | mt7996_reset() mt7996_coredump_unregister() | queue_work() vfree(dev->coredump.crash_data) | mt7996_mac_dump_work() | crash_data-> // UAF Fix this by ensuring dump_work is properly canceled before the crash_data is deallocated. Add cancel_work_sync() in mt7996_unregister_device() to synchronize with any pending or executing dump work.
References
Impacted products
Vendor Product Version
Linux Linux Version: 878161d5d4a469a6ef7f3fb4fe9f676bc508ee99
Version: 878161d5d4a469a6ef7f3fb4fe9f676bc508ee99
Version: 878161d5d4a469a6ef7f3fb4fe9f676bc508ee99
Version: 878161d5d4a469a6ef7f3fb4fe9f676bc508ee99
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/mt7996/init.c"
          ],
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          "vendor": "Linux",
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          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/mt7996/init.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.4"
            },
            {
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.91",
              "versionType": "semver"
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              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.33",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.10",
              "versionType": "semver"
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              "lessThanOrEqual": "*",
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              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.91",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "6.18.33",
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                },
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              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7996: fix use-after-free bugs in mt7996_mac_dump_work()\n\nWhen the mt7996 pci chip is detaching, the mt7996_crash_data is\nreleased in mt7996_coredump_unregister(). However, the work item\ndump_work may still be running or pending, leading to UAF bugs\nwhen the already freed crash_data is dereferenced again in\nmt7996_mac_dump_work().\n\nThe race condition can occur as follows:\n\nCPU 0 (removal path)               | CPU 1 (workqueue)\nmt7996_pci_remove()                | mt7996_sys_recovery_set()\n mt7996_unregister_device()        |  mt7996_reset()\n  mt7996_coredump_unregister()     |   queue_work()\n   vfree(dev-\u003ecoredump.crash_data) | mt7996_mac_dump_work()\n                                   |  crash_data-\u003e // UAF\n\nFix this by ensuring dump_work is properly canceled before\nthe crash_data is deallocated. Add cancel_work_sync() in\nmt7996_unregister_device() to synchronize with any pending\nor executing dump work."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-24T16:30:35.223Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/180182a3f23ff79430a32ca2c4c1885368ceab48"
        },
        {
          "url": "https://git.kernel.org/stable/c/aa4a31cd89f4fde5043ac613fe0e27014a60a60b"
        },
        {
          "url": "https://git.kernel.org/stable/c/188e10f9ea3109d23c6b7643aa6ec2f5cb0faa6d"
        },
        {
          "url": "https://git.kernel.org/stable/c/c8f62f73bbced3a79894655bdb0b625462d956fc"
        }
      ],
      "title": "wifi: mt76: mt7996: fix use-after-free bugs in mt7996_mac_dump_work()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-53097",
    "datePublished": "2026-06-24T16:30:35.223Z",
    "dateReserved": "2026-06-09T07:44:35.384Z",
    "dateUpdated": "2026-06-24T16:30:35.223Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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