libXfont2: Fix of 2 CVEs

{
  "id": "0aa7612e4ab39419610ac45c70c5bd3a318c71c4527d62f204ddfedd3292501a",
  "url": "https://osv.dev/vulnerability/CLSA-2026-1787162017",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "libXfont2: Fix of 2 CVEs",
    "summary": "- CVE-2026-59679: validate num_chars against the encoding array size in fs_read_glyphs() in src/fc/fserve.c; prevents an out-of-bounds read/write on encoding[] when a font server sends more glyphs than extents (upstream commit 668fea81f40bcb48ec67fb55d0b851049d265290) - CVE-2026-44950: bounds-check cumulative glyph data writes in fs_read_glyphs() in src/fc/fserve.c; prevents a heap buffer overflow from overlapping source offsets whose total length exceeds the allocated bitmap buffer (upstream commit c2d222bb22c623d8a40f3275077fc7e6617f2c8a)",
    "evidence": "osv:CLSA-2026-1787162017",
    "products": [
      {
        "name": {
          "value": "libXfont2",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.0.3-12.el9_6.tuxcare.els4",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "libXfont2-devel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.0.3-12.el9_6.tuxcare.els4",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CLSA-2026-1787162017",
      "aliases": [
        "CLSA-2026-1787162017"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.0.3-12.el9_6.tuxcare.els4"
                }
              ]
            }
          ],
          "package": {
            "name": "libXfont2",
            "purl": "pkg:rpm/tuxcare/libXfont2?distro=almalinux-9.6",
            "ecosystem": "TuxCare:AlmaLinux:9.6"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.6esu/CLSA-2026-1787162017.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.0.3-12.el9_6.tuxcare.els4"
                }
              ]
            }
          ],
          "package": {
            "name": "libXfont2-devel",
            "purl": "pkg:rpm/tuxcare/libXfont2-devel?distro=almalinux-9.6",
            "ecosystem": "TuxCare:AlmaLinux:9.6"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.6esu/CLSA-2026-1787162017.json"
          }
        }
      ],
      "modified": "2026-10-26T09:43:54.830306542Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-44950",
        "CVE-2026-59679"
      ],
      "references": [
        "https://errata.tuxcare.com/els_os/tuxcare9.6esu/CLSA-2026-1787162017.html",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-44950",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-59679"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-44950",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-59679",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 450238,
  "published_at": "2026-08-26T09:32:20+00:00"
}