Fix CVE(s): CVE-2025-27363

{
  "id": "c5b29d7ff1616521544d6023e79077c9b02468fd26619b8ca92719d3aa0eb8ca",
  "url": "https://osv.dev/vulnerability/CLSA-2026-1787310855",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Fix CVE(s): CVE-2025-27363",
    "summary": "* SECURITY UPDATE: out-of-bounds write when parsing composite subglyphs of TrueType GX / variable fonts (ELSCVE-171535) - debian/patches-freetype/CVE-2025-27363.patch: reject a subglyph count that truncates to a negative short in load_truetype_glyph before it is used to size the outline arrays in src/truetype/ttgload.c. - CVE-2025-27363",
    "evidence": "osv:CLSA-2026-1787310855",
    "products": [
      {
        "name": {
          "value": "freetype2-demos",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.8.1-2ubuntu2.2+tuxcare.els1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "libfreetype6",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.8.1-2ubuntu2.2+tuxcare.els1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "libfreetype6-dev",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.8.1-2ubuntu2.2+tuxcare.els1",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CLSA-2026-1787310855",
      "aliases": [
        "CLSA-2026-1787310855"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.8.1-2ubuntu2.2+tuxcare.els1"
                }
              ]
            }
          ],
          "package": {
            "name": "freetype2-demos",
            "purl": "pkg:deb/tuxcare/freetype2-demos?distro=ubuntu-18.04",
            "ecosystem": "TuxCare:Ubuntu:18.04"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1787310855.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.8.1-2ubuntu2.2+tuxcare.els1"
                }
              ]
            }
          ],
          "package": {
            "name": "libfreetype6",
            "purl": "pkg:deb/tuxcare/libfreetype6?distro=ubuntu-18.04",
            "ecosystem": "TuxCare:Ubuntu:18.04"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1787310855.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.8.1-2ubuntu2.2+tuxcare.els1"
                }
              ]
            }
          ],
          "package": {
            "name": "libfreetype6-dev",
            "purl": "pkg:deb/tuxcare/libfreetype6-dev?distro=ubuntu-18.04",
            "ecosystem": "TuxCare:Ubuntu:18.04"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1787310855.json"
          }
        }
      ],
      "modified": "2026-10-26T09:31:34.047258255Z",
      "provider": "osv",
      "upstream": [
        "CVE-2025-27363"
      ],
      "references": [
        "https://errata.tuxcare.com/els_os/ubuntu18.04els/CLSA-2026-1787310855.html",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-27363"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2025-27363",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 447749,
  "published_at": "2026-08-21T11:14:26+00:00"
}