Out-of-bounds read of the encoding[] array in fs_read_glyphs() in the font-server client (src/fc/fserve.c). Debian builds libXfont2 with --disable-fc (debian/rules), so the font-server client is not c

{
  "id": "6f286b836661476e3aadc0add701a62cdbb74af7f1b2c4661bd4124cf881bd3c",
  "url": "https://osv.dev/vulnerability/ECHO-17d4-e111-8183",
  "method": "structured",
  "payload": {
    "kind": "withdrawal",
    "title": "Out-of-bounds read of the encoding[] array in fs_read_glyphs() in the font-server client (src/fc/fserve.c). Debian builds libXfont2 with --disable-fc (debian/rules), so the font-server client is not c",
    "summary": "Out-of-bounds read of the encoding[] array in fs_read_glyphs() in the font-server client (src/fc/fserve.c). Debian builds libXfont2 with --disable-fc (debian/rules), so the font-server client is not compiled: the shipped libXfont2.so.2.0.0 (1:2.0.6-1+deb13u1) contains no fs_read_glyphs or other fserve code. Debian rates it unimportant (\"Disabled support to connect to font server since 1:1.4.7-1\").",
    "evidence": "osv:ECHO-17d4-e111-8183",
    "products": [
      {
        "name": {
          "value": "libxfont",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1:2.0.6-1+deb13u1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "ECHO-17d4-e111-8183",
      "aliases": [
        "ECHO-17d4-e111-8183"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1:2.0.6-1+deb13u1"
                }
              ]
            }
          ],
          "package": {
            "name": "libxfont",
            "purl": "pkg:deb/echo/libxfont",
            "ecosystem": "Echo"
          },
          "database_specific": {
            "source": "https://advisory.echohq.com/osv/ECHO-17d4-e111-8183.json"
          }
        }
      ],
      "modified": "2026-10-11T08:45:03.069282547Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-59679"
      ],
      "references": [
        "https://advisory.echohq.com/cve/CVE-2026-59679"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-59679",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 283440,
  "published_at": "2026-08-05T10:11:56.93+00:00"
}