CVE-2026-98891 (GCVE-0-2026-98891)
Vulnerability from cvelistv5
Published
2026-10-23 11:37
Modified
2026-10-26 06:56
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: validate deauth frame length before reason access ieee80211_rx_mgmt_deauth() reads the deauth reason code before checking that the fixed field is actually present in the received frame. Validate the deauth frame length first and only then read the reason code.
References
Impacted products
Vendor Product Version
Linux Linux Version: c9c99f8938e41b878802d5d8481d6f7a212515b0
Version: c9c99f8938e41b878802d5d8481d6f7a212515b0
Version: c9c99f8938e41b878802d5d8481d6f7a212515b0
Version: c9c99f8938e41b878802d5d8481d6f7a212515b0
Version: c9c99f8938e41b878802d5d8481d6f7a212515b0
Version: c9c99f8938e41b878802d5d8481d6f7a212515b0
Version: c9c99f8938e41b878802d5d8481d6f7a212515b0
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{
  "containers": {
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          "programFiles": [
            "net/mac80211/mlme.c"
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              "version": "0",
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            },
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              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
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      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: validate deauth frame length before reason access\n\nieee80211_rx_mgmt_deauth() reads the deauth reason code before checking\nthat the fixed field is actually present in the received frame.\n\nValidate the deauth frame length first and only then read the reason\ncode."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-26T06:56:16.835Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/51092dc769f021e9634474e1bd5a561da477fbdb"
        },
        {
          "url": "https://git.kernel.org/stable/c/a6ed4c00ccdc15011a73daa2b38af9fc5a2c543e"
        },
        {
          "url": "https://git.kernel.org/stable/c/80d1a110e9096b5bf41497f6b151154084862385"
        },
        {
          "url": "https://git.kernel.org/stable/c/a78689e2beed200d4590318612c74ae25c9408cf"
        },
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          "url": "https://git.kernel.org/stable/c/7a5ef1fd654d0e90d59aa32c881789c8bcc4125a"
        },
        {
          "url": "https://git.kernel.org/stable/c/9df64ad43e1f2c036667bba2bf385e9d7b3af564"
        },
        {
          "url": "https://git.kernel.org/stable/c/4a360c6e18dfa9d70006c7247a6a8cc8dfe0d60f"
        }
      ],
      "title": "wifi: mac80211: validate deauth frame length before reason access",
      "x_generator": {
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98891",
    "datePublished": "2026-10-23T11:37:51.588Z",
    "dateReserved": "2026-09-25T10:25:14.378Z",
    "dateUpdated": "2026-10-26T06:56:16.835Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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