CVE-2025-21979 (GCVE-0-2025-21979)
Vulnerability from cvelistv5
Published
2025-04-01 15:47
Modified
2025-05-04 07:26
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: cancel wiphy_work before freeing wiphy A wiphy_work can be queued from the moment the wiphy is allocated and initialized (i.e. wiphy_new_nm). When a wiphy_work is queued, the rdev::wiphy_work is getting queued. If wiphy_free is called before the rdev::wiphy_work had a chance to run, the wiphy memory will be freed, and then when it eventally gets to run it'll use invalid memory. Fix this by canceling the work before freeing the wiphy.
References
Impacted products
Vendor Product Version
Linux Linux Version: 3fcc6d7d5f40dad56dee7bde787b7e23edd4b93c
Version: a3ee4dc84c4e9d14cb34dad095fd678127aca5b6
Version: a3ee4dc84c4e9d14cb34dad095fd678127aca5b6
Version: a3ee4dc84c4e9d14cb34dad095fd678127aca5b6
Version: a3ee4dc84c4e9d14cb34dad095fd678127aca5b6
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{
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          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/wireless/core.c"
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: cancel wiphy_work before freeing wiphy\n\nA wiphy_work can be queued from the moment the wiphy is allocated and\ninitialized (i.e. wiphy_new_nm). When a wiphy_work is queued, the\nrdev::wiphy_work is getting queued.\n\nIf wiphy_free is called before the rdev::wiphy_work had a chance to run,\nthe wiphy memory will be freed, and then when it eventally gets to run\nit\u0027ll use invalid memory.\n\nFix this by canceling the work before freeing the wiphy."
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      "providerMetadata": {
        "dateUpdated": "2025-05-04T07:26:29.274Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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      "title": "wifi: cfg80211: cancel wiphy_work before freeing wiphy",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-21979",
    "datePublished": "2025-04-01T15:47:08.699Z",
    "dateReserved": "2024-12-29T08:45:45.798Z",
    "dateUpdated": "2025-05-04T07:26:29.274Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
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  }
}


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