gnupg2 — security advisory

{
  "id": "9ec624e1266ec7ac0480516c873c3ecaad081a95fdc98f5cda596809a34290b3",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2025-68973",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2025-68973",
    "summary": "In GnuPG before 2.4.9, armor_filter in g10/armor.c has two increments of an index variable where one is intended, leading to an out-of-bounds write for crafted input. (For ExtendedLTS, 2.2.51 and later are fixed versions.)",
    "evidence": "osv:DEBIAN-CVE-2025-68973",
    "products": [
      {
        "name": {
          "value": "gnupg2",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.2.40-1.1+deb12u2",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "2.2.40-1.1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.2.40-1.1+deb12u1",
            "evidence": "/affected/0/versions"
          }
        ]
      },
      {
        "name": {
          "value": "gnupg2",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.4.7-21+deb13u1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "2.4.7-21",
            "evidence": "/affected/1/versions"
          }
        ]
      },
      {
        "name": {
          "value": "gnupg2",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.4.8-5",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "2.4.7-21",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "2.4.8-1",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "2.4.8-2",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "2.4.8-3",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "2.4.8-4",
            "evidence": "/affected/2/versions"
          }
        ]
      }
    ],
    "severity": "high",
    "structured": {
      "id": "DEBIAN-CVE-2025-68973",
      "aliases": [
        "DEBIAN-CVE-2025-68973"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.2.40-1.1+deb12u2"
                }
              ]
            }
          ],
          "package": {
            "name": "gnupg2",
            "purl": "pkg:deb/debian/gnupg2?arch=source&distro=bookworm",
            "ecosystem": "Debian:12"
          },
          "versions": [
            "2.2.40-1.1",
            "2.2.40-1.1+deb12u1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-68973.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.4.7-21+deb13u1"
                }
              ]
            }
          ],
          "package": {
            "name": "gnupg2",
            "purl": "pkg:deb/debian/gnupg2?arch=source&distro=trixie",
            "ecosystem": "Debian:13"
          },
          "versions": [
            "2.4.7-21"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-68973.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.4.8-5"
                }
              ]
            }
          ],
          "package": {
            "name": "gnupg2",
            "purl": "pkg:deb/debian/gnupg2?arch=source&distro=forky",
            "ecosystem": "Debian:14"
          },
          "versions": [
            "2.4.7-21",
            "2.4.8-1",
            "2.4.8-2",
            "2.4.8-3",
            "2.4.8-4"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-68973.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-14T09:47:26.144120970Z",
      "provider": "osv",
      "upstream": [
        "CVE-2025-68973"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2025-68973"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2025-68973",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 315340,
  "published_at": "2025-12-28T17:16:01.5+00:00"
}