CVE-2026-97518 (GCVE-0-2026-97518)

Vulnerability from cvelistv5 – Published: 2026-09-24 16:05 – Updated: 2026-09-28 05:30
VLAI
Title
wifi: cfg80211: reject duplicate wiphy cipher suite entries
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.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7100 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 2ab658f9ce218ae93b3d2db2b3fe68bfefb81196 , < 1305f8b925fe92edf5fec183588dfc7db719180b (git)
Affected: 2ab658f9ce218ae93b3d2db2b3fe68bfefb81196 , < 4cbb2360f4d8c29e67bc7a8bf6ba0ae096583923 (git)
Affected: 2ab658f9ce218ae93b3d2db2b3fe68bfefb81196 , < 7187d145d9042b037e4f10538f70cf95e380219f (git)
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Linux Linux Affected: 2.6.32
Unaffected: 0 , < 2.6.32 (semver)
Unaffected: 6.12.111 , ≤ 6.12.* (semver)
Unaffected: 6.18.53 , ≤ 6.18.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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{
  "containers": {
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          "programFiles": [
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              "negate": false,
              "operator": "OR"
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          "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": "2026-09-28T05:30:55.826Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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          "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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  "cveMetadata": {
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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": "2026-09-28T05:30:55.826Z",
    "state": "PUBLISHED"
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  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
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      "id": "msrc_CVE-2026-97518",
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      "product_status:known_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "wifi: cfg80211: reject duplicate wiphy cipher suite entries",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-97518.json",
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        "cveTags": [],
        "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."
          }
        ],
        "id": "CVE-2026-97518",
        "lastModified": "2026-09-28T06:16:37.827",
        "metrics": {},
        "published": "2026-09-24T17:17:29.787",
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      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-97518.json",
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  }
}



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