Security advisory

{
  "id": "df3fee638b7d9005da6797a133d920c9d5509f2b7391832a4b795605e2df96d2",
  "url": "https://osv.dev/vulnerability/CVE-2018-19333",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2018-19333",
    "summary": "pkg/sentry/kernel/shm/shm.go in Google gVisor before 2018-11-01 allows attackers to overwrite memory locations in processes running as root (but not escape the sandbox) via vectors involving IPC_RMID shmctl calls, because reference counting is mishandled.",
    "evidence": "osv:CVE-2018-19333",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2018-19333",
      "aliases": [
        "CVE-2018-19333"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/google/gvisor",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "0e277a39c8b6f905e289b75e8ad0594e6b3562ca"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "fixed": "0e277a39c8b6f905e289b75e8ad0594e6b3562ca"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-19333.json"
          }
        }
      ],
      "modified": "2026-10-20T10:50:07.314805462Z",
      "provider": "osv",
      "references": [
        "https://github.com/google/gvisor/commit/0e277a39c8b6f905e289b75e8ad0594e6b3562ca",
        "https://justi.cz/security/2018/11/14/gvisor-lpe.html"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:a:google:gvisor:*:*:*:*:*:*:*:*"
            ],
            "vendor_product": "google:gvisor",
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "2018-11-01"
                  }
                ],
                "source": "CPE_RANGE"
              }
            ]
          },
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "2018-11-01"
                  }
                ],
                "source": "DESCRIPTION"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2018-19333",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 381305,
  "published_at": "2018-11-17T17:29:00.227+00:00"
}