nfc: llcp: read llcp_sock->local under the socket lock in getsockopt

{
  "id": "a4ee654ef1d3f659b6380cdbc0c93a7d48f6a1635a5df4ea9e6c6a18a455069a",
  "url": "https://osv.dev/vulnerability/CVE-2026-90225",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "nfc: llcp: read llcp_sock->local under the socket lock in getsockopt",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: nfc: llcp: read llcp_sock->local under the socket lock in getsockopt nfc_llcp_getsockopt() read llcp_sock->local before lock_sock(sk) and then dereferenced the cached pointer inside the locked region. llcp_sock_bind() assigns and clears llcp_sock->local under the same socket lock, dropping the last reference on its error path. A getsockopt() racing an in-flight bind() can observe the pointer, block on lock_sock(), and then dereference a freed nfc_llcp_local once bind() has unwound. Move the llcp_sock->local read and the NULL check inside the lock_sock(sk) region so bind() cannot mutate or free the pointer between the load and the use.",
    "evidence": "osv:CVE-2026-90225",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.10.270",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.221",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.188",
            "evidence": "/affected/1/ranges"
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            "evidence": "/affected/1/ranges"
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            "evidence": "/affected/1/ranges"
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            "value": "6.18.52",
            "evidence": "/affected/1/ranges"
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          {
            "value": "7.2.6",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-90225",
      "aliases": [
        "CVE-2026-90225"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
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              "type": "GIT",
              "events": [
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                {
                  "fixed": "56fd158fef20268f48db6cdfe5d722e930134eda"
                },
                {
                  "fixed": "8ba8cec0586727cc135ca4827921fc7b52946d71"
                },
                {
                  "fixed": "ed5240bab3468988077fe8bf29b935eaecc9ff89"
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                {
                  "fixed": "fe65727a4a21b11c18eebae1338482767a897b76"
                },
                {
                  "fixed": "2d8ac24565be85bf56580b87bf1b874d35625eb5"
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                {
                  "fixed": "156e65bd29307f5053835bff60bc1ba342fa010f"
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                  "fixed": "d1b73962675cdc5a58e2707e25b548d8b495fde0"
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          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90225.json"
          }
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        {
          "ranges": [
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              "type": "ECOSYSTEM",
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                  "introduced": "3.10.0"
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          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
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          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90225.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:44.320575804Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/156e65bd29307f5053835bff60bc1ba342fa010f",
        "https://git.kernel.org/stable/c/2d8ac24565be85bf56580b87bf1b874d35625eb5",
        "https://git.kernel.org/stable/c/36812527052c5bfb1ec6c1e292d67a5bf76b750f",
        "https://git.kernel.org/stable/c/56fd158fef20268f48db6cdfe5d722e930134eda",
        "https://git.kernel.org/stable/c/8ba8cec0586727cc135ca4827921fc7b52946d71",
        "https://git.kernel.org/stable/c/d1b73962675cdc5a58e2707e25b548d8b495fde0",
        "https://git.kernel.org/stable/c/ed5240bab3468988077fe8bf29b935eaecc9ff89",
        "https://git.kernel.org/stable/c/fe65727a4a21b11c18eebae1338482767a897b76",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90225.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-90225",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90225.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-90225",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 512416,
  "published_at": "2026-09-17T16:07:34.658+00:00"
}