ksmbd: close accepted socket when per-IP limit rejects connection

{
  "id": "d456983f287e0f1958ecd450f4b63b40ce67d075bf315976552c61238bb7f878",
  "url": "https://osv.dev/vulnerability/CVE-2025-68246",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "ksmbd: close accepted socket when per-IP limit rejects connection",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: ksmbd: close accepted socket when per-IP limit rejects connection When the per-IP connection limit is exceeded in ksmbd_kthread_fn(), the code sets ret = -EAGAIN and continues the accept loop without closing the just-accepted socket. That leaks one socket per rejected attempt from a single IP and enables a trivial remote DoS. Release client_sk before continuing. This bug was found with ZeroPath.",
    "evidence": "osv:CVE-2025-68246",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.1.159",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.117",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.59",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.17.9",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2025-68246",
      "aliases": [
        "CVE-2025-68246"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                  "introduced": "0626e6641f6b467447c81dd7678a69c66f7746cf"
                },
                {
                  "fixed": "7a3c7154d5fc05956a8ad9e72ecf49e21555bfca"
                },
                {
                  "fixed": "5746b2a0f5eb3d79667b3c51fe849bd62464220e"
                },
                {
                  "fixed": "4587a7826be1ae0190dba10ff70b46bb0e3bc7d3"
                },
                {
                  "fixed": "35521b5a7e8a184548125f4530552101236dcda1"
                },
                {
                  "fixed": "98a5fd31cbf72d46bf18e50b3ab0ce86d5f319a9"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-68246.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.15.0"
                },
                {
                  "fixed": "6.1.159"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.6.117"
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            {
              "type": "ECOSYSTEM",
              "events": [
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                  "introduced": "6.7.0"
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                {
                  "fixed": "6.12.59"
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            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
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                {
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          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-68246.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:48.793983162Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/35521b5a7e8a184548125f4530552101236dcda1",
        "https://git.kernel.org/stable/c/4587a7826be1ae0190dba10ff70b46bb0e3bc7d3",
        "https://git.kernel.org/stable/c/5746b2a0f5eb3d79667b3c51fe849bd62464220e",
        "https://git.kernel.org/stable/c/7a3c7154d5fc05956a8ad9e72ecf49e21555bfca",
        "https://git.kernel.org/stable/c/98a5fd31cbf72d46bf18e50b3ab0ce86d5f319a9",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/68xxx/CVE-2025-68246.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-68246",
        "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/2025/68xxx/CVE-2025-68246.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-68246",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 516769,
  "published_at": "2025-12-16T14:21:23.551+00:00"
}