CVE-2022-50533 (GCVE-0-2022-50533)
Vulnerability from cvelistv5
Published
2025-10-07 15:19
Modified
2025-10-07 15:19
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: mlme: fix null-ptr deref on failed assoc If association to an AP without a link 0 fails, then we crash in tracing because it assumes that either ap_mld_addr or link 0 BSS is valid, since we clear sdata->vif.valid_links and then don't add the ap_mld_addr to the struct. Since we clear also sdata->vif.cfg.ap_addr, keep a local copy of it and assign it earlier, before clearing valid_links, to fix this.
References
Impacted products
Vendor Product Version
Linux Linux Version: 81151ce462e533551f3284bfdb8e0f461c9220e6
Version: 81151ce462e533551f3284bfdb8e0f461c9220e6
Version: 81151ce462e533551f3284bfdb8e0f461c9220e6
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{
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          "product": "Linux",
          "programFiles": [
            "net/mac80211/mlme.c"
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          "vendor": "Linux",
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          "vendor": "Linux",
          "versions": [
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: mlme: fix null-ptr deref on failed assoc\n\nIf association to an AP without a link 0 fails, then we crash in\ntracing because it assumes that either ap_mld_addr or link 0 BSS\nis valid, since we clear sdata-\u003evif.valid_links and then don\u0027t\nadd the ap_mld_addr to the struct.\n\nSince we clear also sdata-\u003evif.cfg.ap_addr, keep a local copy of\nit and assign it earlier, before clearing valid_links, to fix\nthis."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-10-07T15:19:23.277Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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        },
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        {
          "url": "https://git.kernel.org/stable/c/78a6a43aaf87180ec7425a2a90468e1b4d09a1ec"
        }
      ],
      "title": "wifi: mac80211: mlme: fix null-ptr deref on failed assoc",
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    "cveId": "CVE-2022-50533",
    "datePublished": "2025-10-07T15:19:23.277Z",
    "dateReserved": "2025-10-07T15:15:38.664Z",
    "dateUpdated": "2025-10-07T15:19:23.277Z",
    "state": "PUBLISHED"
  },
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  "vulnerability-lookup:meta": {
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  }
}


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