tcp: Fix data-races around sysctl_tcp_l3mdev_accept.

{
  "id": "14382fd76f2668c3afb4014469338a8656de172a46eccd193247a8dea97209ef",
  "url": "https://osv.dev/vulnerability/CVE-2022-49599",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "tcp: Fix data-races around sysctl_tcp_l3mdev_accept.",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: tcp: Fix data-races around sysctl_tcp_l3mdev_accept. While reading sysctl_tcp_l3mdev_accept, it can be changed concurrently. Thus, we need to add READ_ONCE() to its readers.",
    "evidence": "osv:CVE-2022-49599",
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    "severity": "medium",
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      "id": "CVE-2022-49599",
      "aliases": [
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          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H"
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      ],
      "modified": "2026-10-28T02:30:43.212022773Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/08a75f10679470552a3a443f9aefd1399604d31d",
        "https://git.kernel.org/stable/c/1d9c81833dec46ccb52a1d0db970fefb7c4fa071",
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        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49599.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-49599",
        "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/2022/49xxx/CVE-2022-49599.json"
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    },
    "related_cves": [
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        "value": "CVE-2022-49599",
        "evidence": "/id"
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    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
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  "source_id": "core-osv",
  "document_id": 510721,
  "published_at": "2025-02-26T02:23:27.958+00:00"
}