Security advisory

{
  "id": "7ae679b46bfa9c803837381435e9ae4dccdfcfef811248e987c5ef528178cc89",
  "url": "https://osv.dev/vulnerability/CVE-2025-12970",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2025-12970",
    "summary": "The extract_name function in Fluent Bit in_docker input plugin copies container names into a fixed size stack buffer without validating length. An attacker who can create containers or control container names, can supply a long name that overflows the buffer, leading to process crash or arbitrary code execution.",
    "evidence": "osv:CVE-2025-12970",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2025-12970",
      "aliases": [
        "BIT-fluent-bit-2025-12970",
        "CVE-2025-12970"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/fluent/fluent-bit",
              "type": "GIT",
              "events": [
                {
                  "introduced": "a8bd9e4cf636710dc7ce3af9d940bb4d91e660fc"
                },
                {
                  "last_affected": "a8bd9e4cf636710dc7ce3af9d940bb4d91e660fc"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:treasuredata:fluent_bit:4.1.0:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "4.1.0"
                      },
                      {
                        "last_affected": "4.1.0"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "4.1.0",
            "v4.1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-12970.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:21.592780349Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/12xxx/CVE-2025-12970.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-12970",
        "https://fluentbit.io/blog/2025/10/28/security-vulnerabilities-addressed-in-fluent-bit-v4.1-and-backported-to-v4.0/",
        "https://www.oligo.security/blog/critical-vulnerabilities-in-fluent-bit-expose-cloud-environments-to-remote-takeover"
      ],
      "provider_metadata": {
        "cna_assigner": "certcc",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "4.0.12"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/12xxx/CVE-2025-12970.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-12970",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 487846,
  "published_at": "2025-11-24T14:39:52.569+00:00"
}