libX11 security update

{
  "id": "32544b652be96a6da8490fc383c9c058422449e8fa3597009e2f21e96c0531a2",
  "url": "https://osv.dev/vulnerability/OESA-2026-4249",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "libX11 security update",
    "summary": "Core X11 protocol client library. Security Fix(es): A malicious X server could exploit a buffer overflow in libX11 before 1.8.14 during handling of XkbGetMap overflowing the key_sym_map.(CVE-2026-88806) An out-of-bounds read vulnerability in libX11's XIM (X Input Method) attribute parser in libX11 before 1.8.14 could be used by malicious X servers to crash attached X clients.(CVE-2026-94283) An out-of-bounds read vulnerability in libX11's XIM trigger-key registration parser in libX11 before 1.8.14 could be used by malicious X servers to crash attached X clients.(CVE-2026-94284) An out-of-bounds read in libX11's byte-oriented codeset parser in libX11 before 1.8.14 could be used by malicious X servers to crash attached X clients.(CVE-2026-94285)",
    "evidence": "osv:OESA-2026-4249",
    "products": [
      {
        "name": {
          "value": "libX11",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.8.7-4.oe2403sp4",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "OESA-2026-4249",
      "aliases": [
        "OESA-2026-4249"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.8.7-4.oe2403sp4"
                }
              ]
            }
          ],
          "package": {
            "name": "libX11",
            "purl": "pkg:rpm/openEuler/libX11&distro=openEuler-24.03-LTS-SP4",
            "ecosystem": "openEuler:24.03-LTS-SP4"
          },
          "database_specific": {
            "source": "https://repo.openeuler.org/security/data/osv/OESA-2026-4249.json"
          },
          "ecosystem_specific": {
            "src": [
              "libX11-1.8.7-4.oe2403sp4.src.rpm"
            ],
            "noarch": [
              "libX11-help-1.8.7-4.oe2403sp4.noarch.rpm"
            ],
            "x86_64": [
              "libX11-1.8.7-4.oe2403sp4.x86_64.rpm",
              "libX11-debuginfo-1.8.7-4.oe2403sp4.x86_64.rpm",
              "libX11-debugsource-1.8.7-4.oe2403sp4.x86_64.rpm",
              "libX11-devel-1.8.7-4.oe2403sp4.x86_64.rpm"
            ],
            "aarch64": [
              "libX11-1.8.7-4.oe2403sp4.aarch64.rpm",
              "libX11-debuginfo-1.8.7-4.oe2403sp4.aarch64.rpm",
              "libX11-debugsource-1.8.7-4.oe2403sp4.aarch64.rpm",
              "libX11-devel-1.8.7-4.oe2403sp4.aarch64.rpm"
            ]
          }
        }
      ],
      "modified": "2026-10-16T12:15:17.555868880Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-88806",
        "CVE-2026-94283",
        "CVE-2026-94284",
        "CVE-2026-94285"
      ],
      "references": [
        "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4249",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-88806",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-94283",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-94284",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-94285"
      ],
      "provider_metadata": {
        "severity": "High"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-88806",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-94283",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-94284",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-94285",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/database_specific/severity"
  },
  "source_id": "core-osv",
  "document_id": 340870,
  "published_at": "2026-10-16T11:58:35+00:00"
}