Security advisory

{
  "id": "546210693d11540721aecf3237bceeb795a4d717244b5644f84fb40770b99f67",
  "url": "https://osv.dev/vulnerability/CVE-2021-3571",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-3571",
    "summary": "A flaw was found in the ptp4l program of the linuxptp package. When ptp4l is operating on a little-endian architecture as a PTP transparent clock, a remote attacker could send a crafted one-step sync message to cause an information leak or crash. The highest threat from this vulnerability is to data confidentiality and system availability. This flaw affects linuxptp versions before 3.1.1 and before 2.0.1.",
    "evidence": "osv:CVE-2021-3571",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-3571",
      "aliases": [
        "CVE-2021-3571"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/richardcochran/linuxptp",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "785bb70509d407404530060c1abe9f04e9275078"
                },
                {
                  "introduced": "3da961bb112b4d0e823ff125901b5674e7b57c0e"
                },
                {
                  "fixed": "6feb76186ac39eab2fc011053f1cf46bfc94c8e4"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:linuxptp_project:linuxptp:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "2.0.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:linuxptp_project:linuxptp:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.0"
                      },
                      {
                        "fixed": "3.1.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v3.1",
            "v1.7",
            "v1.6",
            "v1.5",
            "v2.0",
            "v1.8",
            "v3.0",
            "v1.4",
            "v1.3",
            "v1.2",
            "v1.1",
            "v1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-3571.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:40.565106791Z",
      "provider": "osv",
      "references": [
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RHRUVSDP673LXJ5HGIPQPWPIYUPWYQA7/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUBKTRCMJ6VKS7DIBSZQB4ATSKVCJYXJ/",
        "https://bugzilla.redhat.com/show_bug.cgi?id=1966241"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*",
              "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*"
            ],
            "vendor_product": "fedoraproject:fedora",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "33"
                  },
                  {
                    "last_affected": "33"
                  },
                  {
                    "introduced": "34"
                  },
                  {
                    "last_affected": "34"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:-:*:*:*"
            ],
            "vendor_product": "redhat:enterprise_linux",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "8.0"
                  },
                  {
                    "last_affected": "8.0"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2021-3571",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 434954,
  "published_at": "2021-07-09T11:15:08.96+00:00"
}