CVE-2026-97518 (GCVE-0-2026-97518)
Vulnerability from cvelistv5
Published
2026-09-24 16:05
Modified
2026-10-21 12:53
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: reject duplicate wiphy cipher suite entries Duplicate entries in wiphy->cipher_suites do not describe any additional capability, but cfg80211 currently accepts them and leaves individual consumers to deal with them. One such consumer is the WEXT compatibility code, which appends a WEP key length for each WEP cipher entry it sees. Repeated WEP entries can therefore overflow the fixed iw_range::encoding_size array returned by SIOCGIWRANGE. Reject duplicate cipher suite entries in wiphy_register() instead. This keeps the cipher suite invariant in one place and makes malformed wiphy descriptions fail early with -EINVAL, rather than relying on a single cfg80211 user to handle duplicates correctly.
References
Impacted products
Vendor Product Version
Linux Linux Version: 2ab658f9ce218ae93b3d2db2b3fe68bfefb81196
Version: 2ab658f9ce218ae93b3d2db2b3fe68bfefb81196
Version: 2ab658f9ce218ae93b3d2db2b3fe68bfefb81196
Version: 2ab658f9ce218ae93b3d2db2b3fe68bfefb81196
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{
  "containers": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/wireless/core.c"
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              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: reject duplicate wiphy cipher suite entries\n\nDuplicate entries in wiphy-\u003ecipher_suites do not describe any\nadditional capability, but cfg80211 currently accepts them and leaves\nindividual consumers to deal with them.\n\nOne such consumer is the WEXT compatibility code, which appends a WEP\nkey length for each WEP cipher entry it sees. Repeated WEP entries can\ntherefore overflow the fixed iw_range::encoding_size array returned by\nSIOCGIWRANGE.\n\nReject duplicate cipher suite entries in wiphy_register() instead.\nThis keeps the cipher suite invariant in one place and makes malformed\nwiphy descriptions fail early with -EINVAL, rather than relying on a\nsingle cfg80211 user to handle duplicates correctly."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-21T12:53:01.807Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/d12e92e72db914e1ea777c6f246f6be75985438e"
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          "url": "https://git.kernel.org/stable/c/1305f8b925fe92edf5fec183588dfc7db719180b"
        },
        {
          "url": "https://git.kernel.org/stable/c/4cbb2360f4d8c29e67bc7a8bf6ba0ae096583923"
        },
        {
          "url": "https://git.kernel.org/stable/c/7187d145d9042b037e4f10538f70cf95e380219f"
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      "title": "wifi: cfg80211: reject duplicate wiphy cipher suite entries",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-97518",
    "datePublished": "2026-09-24T16:05:18.072Z",
    "dateReserved": "2026-09-24T16:01:01.152Z",
    "dateUpdated": "2026-10-21T12:53:01.807Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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