Use-after-free vulnerability in the Linux Kernel

{
  "id": "a3d9f25b3389be2fff3f3bde980927b5ea9b9ad8c219afa00e20f9101397e973",
  "url": "https://osv.dev/vulnerability/CVE-2023-0461",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Use-after-free vulnerability in the Linux Kernel",
    "summary": "There is a use-after-free vulnerability in the Linux Kernel which can be exploited to achieve local privilege escalation. To reach the vulnerability kernel configuration flag CONFIG_TLS or CONFIG_XFRM_ESPINTCP has to be configured, but the operation does not require any privilege. There is a use-after-free bug of icsk_ulp_data of a struct inet_connection_sock. When CONFIG_TLS is enabled, user can install a tls context (struct tls_context) on a connected tcp socket. The context is not cleared if this socket is disconnected and reused as a listener. If a new socket is created from the listener, the context is inherited and vulnerable. The setsockopt TCP_ULP operation does not require any privilege. We recommend upgrading past commit 2c02d41d71f90a5168391b6a5f2954112ba2307c",
    "evidence": "osv:CVE-2023-0461",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2023-0461",
      "aliases": [
        "CVE-2023-0461"
      ],
      "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": [
            {
              "repo": "https://git.kernel.org",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2c02d41d71f90a5168391b6a5f2954112ba2307c"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "2c02d41d71f90a5168391b6a5f2954112ba2307c"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-0461.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:46.803551951Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org",
        "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2c02d41d71f90a5168391b6a5f2954112ba2307c",
        "https://kernel.dance/#2c02d41d71f90a5168391b6a5f2954112ba2307c",
        "https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html",
        "https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/0xxx/CVE-2023-0461.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-0461",
        "https://security.netapp.com/advisory/ntap-20230331-0006/"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-416"
        ],
        "cna_assigner": "Google",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/0xxx/CVE-2023-0461.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-0461",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 514599,
  "published_at": "2023-02-28T14:23:02.224+00:00"
}