libX11: Fix of 6 CVEs

{
  "id": "8a7657180237cc2e0993dc8c714716b077ce446c6bf690ddb4b19b534151b4b4",
  "url": "https://osv.dev/vulnerability/CLSA-2026-1792609205",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "libX11: Fix of 6 CVEs",
    "summary": "- CVE-2018-14599: fix off-by-one writes in XListExtensions, XGetFontPath and XListFonts - CVE-2018-14600: fix out-of-bounds write in XListExtensions and XGetFontPath - CVE-2018-14598: fix crash on invalid reply in XListExtensions and XGetFontPath - CVE-2021-31535: reject strings longer than USHRT_MAX before sending them on the wire - CVE-2023-3138: add bounds checks for extension request, event and error codes - CVE-2023-43787: fix integer overflow in XCreateImage leading to heap overflow",
    "evidence": "osv:CLSA-2026-1792609205",
    "products": [
      {
        "name": {
          "value": "libX11",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.6.4-4.el6_10.tuxcare.els1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "libX11-common",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.6.4-4.el6_10.tuxcare.els1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "libX11-devel",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.6.4-4.el6_10.tuxcare.els1",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CLSA-2026-1792609205",
      "aliases": [
        "CLSA-2026-1792609205"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.6.4-4.el6_10.tuxcare.els1"
                }
              ]
            }
          ],
          "package": {
            "name": "libX11",
            "purl": "pkg:rpm/tuxcare/libX11?distro=centos-6",
            "ecosystem": "TuxCare:CentOS:6"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos6els/CLSA-2026-1792609205.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.6.4-4.el6_10.tuxcare.els1"
                }
              ]
            }
          ],
          "package": {
            "name": "libX11-common",
            "purl": "pkg:rpm/tuxcare/libX11-common?distro=centos-6",
            "ecosystem": "TuxCare:CentOS:6"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos6els/CLSA-2026-1792609205.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.6.4-4.el6_10.tuxcare.els1"
                }
              ]
            }
          ],
          "package": {
            "name": "libX11-devel",
            "purl": "pkg:rpm/tuxcare/libX11-devel?distro=centos-6",
            "ecosystem": "TuxCare:CentOS:6"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos6els/CLSA-2026-1792609205.json"
          }
        }
      ],
      "modified": "2026-10-26T09:43:44.530069186Z",
      "provider": "osv",
      "upstream": [
        "CVE-2018-14598",
        "CVE-2018-14599",
        "CVE-2018-14600",
        "CVE-2021-31535",
        "CVE-2023-3138",
        "CVE-2023-43787"
      ],
      "references": [
        "https://errata.tuxcare.com/els_os/centos6els/CLSA-2026-1792609205.html",
        "https://nvd.nist.gov/vuln/detail/CVE-2018-14598",
        "https://nvd.nist.gov/vuln/detail/CVE-2018-14599",
        "https://nvd.nist.gov/vuln/detail/CVE-2018-14600",
        "https://nvd.nist.gov/vuln/detail/CVE-2021-31535",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-3138",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-43787"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2018-14598",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2018-14599",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2018-14600",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2021-31535",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2023-3138",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2023-43787",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 450111,
  "published_at": "2026-10-21T20:48:54+00:00"
}