CVE-2026-98704 (GCVE-0-2026-98704)
Vulnerability from cvelistv5
Published
2026-10-18 15:46
Modified
2026-10-30 12:38
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: keep fallback association elements alive Associating to a non-transmitted MBSSID profile reads freed memory while determining the operating channel and applying HT capabilities. When an association response omits WMM, HT, or VHT information, ieee80211_assoc_config_link() parses the cached BSS IEs and copies the missing element pointers out of that fallback parse. For a non-transmitted MBSSID profile those pointers refer to merged-profile storage owned by the parse object, and the fallback block frees that object at its end. The copied pointers are used afterwards to determine the operating channel, configure bandwidth, and apply HT capabilities. Keep the fallback parse result alive until association setup finishes. [reorder variable declaration]
References
Impacted products
Vendor Product Version
Linux Linux Version: 5023b14cf4df4d22e1a80738167f3438c9e62e5f
Version: 5023b14cf4df4d22e1a80738167f3438c9e62e5f
Version: 5023b14cf4df4d22e1a80738167f3438c9e62e5f
Version: 5023b14cf4df4d22e1a80738167f3438c9e62e5f
Version: 5023b14cf4df4d22e1a80738167f3438c9e62e5f
Version: 5023b14cf4df4d22e1a80738167f3438c9e62e5f
Version: 5023b14cf4df4d22e1a80738167f3438c9e62e5f
Version: 5023b14cf4df4d22e1a80738167f3438c9e62e5f
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{
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          "programFiles": [
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      "cpeApplicability": [
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              "negate": false,
              "operator": "OR"
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        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: keep fallback association elements alive\n\nAssociating to a non-transmitted MBSSID profile reads freed memory while\ndetermining the operating channel and applying HT capabilities.\n\nWhen an association response omits WMM, HT, or VHT information,\nieee80211_assoc_config_link() parses the cached BSS IEs and copies the\nmissing element pointers out of that fallback parse. For a\nnon-transmitted MBSSID profile those pointers refer to merged-profile\nstorage owned by the parse object, and the fallback block frees that\nobject at its end. The copied pointers are used afterwards to determine\nthe operating channel, configure bandwidth, and apply HT capabilities.\n\nKeep the fallback parse result alive until association setup finishes.\n\n[reorder variable declaration]"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-30T12:38:54.905Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/409da4ad76d921b173ebb801e316023f74564239"
        },
        {
          "url": "https://git.kernel.org/stable/c/fb47973eecd869ab5662bb39002f6680536caa6c"
        },
        {
          "url": "https://git.kernel.org/stable/c/64183344f6f29ed0cad33d6ec0e769aa5e31fb19"
        },
        {
          "url": "https://git.kernel.org/stable/c/de77b0f68142147e74fac1c497dbe1f93daeeed9"
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        {
          "url": "https://git.kernel.org/stable/c/1d9644753d46c86b4e5c05bd6d9d35339ea27331"
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          "url": "https://git.kernel.org/stable/c/d0183cd1f6a2dba9e63be20af2f65093c9c8d121"
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          "url": "https://git.kernel.org/stable/c/0878594c5806dd29fa5e16cc026ce19158afdad2"
        },
        {
          "url": "https://git.kernel.org/stable/c/a10a2f80476d166fd81c361ec0319493671b694e"
        }
      ],
      "title": "wifi: mac80211: keep fallback association elements alive",
      "x_generator": {
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98704",
    "datePublished": "2026-10-18T15:46:34.493Z",
    "dateReserved": "2026-09-25T10:25:14.365Z",
    "dateUpdated": "2026-10-30T12:38:54.905Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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