wifi: libertas: reject short monitor TX frames

{
  "id": "40dfb923781b0d313f8b4fd17e6ebd8f3c58113de07292107c997b6887a0e219",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-98890",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "wifi: libertas: reject short monitor TX frames",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: wifi: libertas: reject short monitor TX frames In monitor mode, lbs_hard_start_xmit() casts skb->data to a radiotap TX header, skips that header, and then copies the 802.11 destination address from offset 4 in the remaining frame. The generic length check only rejects zero-length and oversized skbs, so a short monitor frame can be read past the end of the skb data. Require enough bytes for the radiotap TX header and the destination address field before using the monitor-mode header layout.",
    "evidence": "cve:CVE-2026-98890",
    "products": [
      {
        "name": {
          "value": "Linux",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      },
      {
        "name": {
          "value": "Linux",
          "evidence": "/containers/cna/affected/1/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-98890",
      "aliases": [
        "CVE-2026-98890"
      ],
      "metrics": [],
      "affected": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "876c9d3aeb989cf1961f2c228d309ba5dcfb1172",
              "lessThan": "68c92c991ddb75dfd3fd62a94a1d4d2dde44dc3c",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "876c9d3aeb989cf1961f2c228d309ba5dcfb1172",
              "lessThan": "d865dd6de8295f2bfaa83f0f5d49d2bef1543065",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "876c9d3aeb989cf1961f2c228d309ba5dcfb1172",
              "lessThan": "6576baa3fdbaa91fa75e4ba27095f4b8a27349a8",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "876c9d3aeb989cf1961f2c228d309ba5dcfb1172",
              "lessThan": "b657cc98d7936c5d9ed7e0e1944ad0e1f36375bb",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "876c9d3aeb989cf1961f2c228d309ba5dcfb1172",
              "lessThan": "443fac3de65c76544b450b9f9903be8989150d55",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "876c9d3aeb989cf1961f2c228d309ba5dcfb1172",
              "lessThan": "cdcfd662c67833d89ee3d912efde2eb67c8a7326",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "876c9d3aeb989cf1961f2c228d309ba5dcfb1172",
              "lessThan": "13ff543e0b2c713aedeaadadde686686e949dc78",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/net/wireless/marvell/libertas/tx.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.22"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "2.6.22",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.10.271",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.222",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.189",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.158",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.111",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.53",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/net/wireless/marvell/libertas/tx.c"
          ],
          "defaultStatus": "affected"
        }
      ],
      "modified": "2026-10-26T06:56:15.594Z",
      "provider": "cve",
      "references": [
        "https://git.kernel.org/stable/c/68c92c991ddb75dfd3fd62a94a1d4d2dde44dc3c",
        "https://git.kernel.org/stable/c/d865dd6de8295f2bfaa83f0f5d49d2bef1543065",
        "https://git.kernel.org/stable/c/6576baa3fdbaa91fa75e4ba27095f4b8a27349a8",
        "https://git.kernel.org/stable/c/b657cc98d7936c5d9ed7e0e1944ad0e1f36375bb",
        "https://git.kernel.org/stable/c/443fac3de65c76544b450b9f9903be8989150d55",
        "https://git.kernel.org/stable/c/cdcfd662c67833d89ee3d912efde2eb67c8a7326",
        "https://git.kernel.org/stable/c/13ff543e0b2c713aedeaadadde686686e949dc78"
      ],
      "provider_metadata": {
        "cna": {
          "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "shortName": "Linux",
          "dateUpdated": "2026-10-26T06:56:15.594Z"
        }
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-98890",
        "evidence": "/cveMetadata/cveId"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-cve",
  "document_id": 263348,
  "published_at": "2026-10-23T11:37:50.495+00:00"
}