{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2025-38512",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-38512",
    "idYear": 2025,
    "status": "PUBLISHED",
    "publishedAt": "2025-08-16T10:54:54.285Z",
    "updatedAt": "2026-10-15T21:52:18.147Z",
    "importedAt": "2026-10-24T01:57:34.152Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "wifi: prevent A-MSDU attacks in mesh networks",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: prevent A-MSDU attacks in mesh networks\n\nThis patch is a mitigation to prevent the A-MSDU spoofing vulnerability\nfor mesh networks. The initial update to the IEEE 802.11 standard, in\nresponse to the FragAttacks, missed this case (CVE-2025-27558). It can\nbe considered a variant of CVE-2020-24588 but for mesh networks.\n\nThis patch tries to detect if a standard MSDU was turned into an A-MSDU\nby an adversary. This is done by parsing a received A-MSDU as a standard\nMSDU, calculating the length of the Mesh Control header, and seeing if\nthe 6 bytes after this header equal the start of an rfc1042 header. If\nequal, this is a strong indication of an ongoing attack attempt.\n\nThis defense was tested with mac80211_hwsim against a mesh network that\nuses an empty Mesh Address Extension field, i.e., when four addresses\nare used, and when using a 12-byte Mesh Address Extension field, i.e.,\nwhen six addresses are used. Functionality of normal MSDUs and A-MSDUs\nwas also tested, and confirmed working, when using both an empty and\n12-byte Mesh Address Extension field.\n\nIt was also tested with mac80211_hwsim that A-MSDU attacks in non-mesh\nnetworks keep being detected and prevented.\n\nNote that the vulnerability being patched, and the defense being\nimplemented, was also discussed in the following paper and in the\nfollowing IEEE 802.11 presentation:\n\nhttps://papers.mathyvanhoef.com/wisec2025.pdf\nhttps://mentor.ieee.org/802.11/dcn/25/11-25-0949-00-000m-a-msdu-mesh-spoof-protection.docx",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "79720743421753ff72bfa0d79976c534645b81c1",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e2c8a3c0388aef6bfc4aabfba07bc7dff16eea80"
            },
            {
              "version": "986e43b19ae9176093da35e0a844e65c8bf9ede7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ec6392061de6681148b63ee6c8744da833498cdd"
            },
            {
              "version": "986e43b19ae9176093da35e0a844e65c8bf9ede7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e01851f6e9a665a6011b14714b271d3e6b0b8d32"
            },
            {
              "version": "986e43b19ae9176093da35e0a844e65c8bf9ede7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "6e3b09402cc6c3e3474fa548e8adf6897dda05de"
            },
            {
              "version": "986e43b19ae9176093da35e0a844e65c8bf9ede7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "737bb912ebbe4571195c56eba557c4d7315b26fb"
            },
            {
              "version": "6.1.107",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.1.146"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.3",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.3"
            },
            {
              "version": "6.1.146",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.99",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.39",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.15.7",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.15.*"
            },
            {
              "version": "6.16",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}