bpf: Fix verifier assumptions about socket->sk

{
  "id": "856e26d1c1781dab1421123387595132b33c75ccb3a12b9cd06702372171bbf2",
  "url": "https://osv.dev/vulnerability/CVE-2024-38566",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "bpf: Fix verifier assumptions about socket->sk",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: bpf: Fix verifier assumptions about socket->sk The verifier assumes that 'sk' field in 'struct socket' is valid and non-NULL when 'socket' pointer itself is trusted and non-NULL. That may not be the case when socket was just created and passed to LSM socket_accept hook. Fix this verifier assumption and adjust tests.",
    "evidence": "osv:CVE-2024-38566",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.6.33",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.8.12",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.9.3",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2024-38566",
      "aliases": [
        "CVE-2024-38566"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "6fcd486b3a0a628c41f12b3a7329a18a2c74b351"
                },
                {
                  "fixed": "39f8a29330f433000e716eefc4b9abda05b71a82"
                },
                {
                  "fixed": "6f5ae91172a93abac9720ba94edf3ec8f4d7f24f"
                },
                {
                  "fixed": "c58ccdd2483a1d990748cdaf94206b5d5986a001"
                },
                {
                  "fixed": "0db63c0b86e981a1e97d2596d64ceceba1a5470e"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-38566.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.4.0"
                },
                {
                  "fixed": "6.6.33"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.8.12"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.9.0"
                },
                {
                  "fixed": "6.9.3"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-38566.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:43.189716414Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/0db63c0b86e981a1e97d2596d64ceceba1a5470e",
        "https://git.kernel.org/stable/c/39f8a29330f433000e716eefc4b9abda05b71a82",
        "https://git.kernel.org/stable/c/6f5ae91172a93abac9720ba94edf3ec8f4d7f24f",
        "https://git.kernel.org/stable/c/c58ccdd2483a1d990748cdaf94206b5d5986a001",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/38xxx/CVE-2024-38566.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-38566",
        "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/2024/38xxx/CVE-2024-38566.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-38566",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 510689,
  "published_at": "2024-06-19T13:35:33.587+00:00"
}