{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "ff754b812597177412f2e2fa2b1dd1eecbeb75cf"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              },
              {
                "range": [
                  {
                    "fixed": "a3899d75e180d73f2971af2a402e6fdf19c0339c"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "ff754b812597177412f2e2fa2b1dd1eecbeb75cf"
            },
            {
              "fixed": "a3899d75e180d73f2971af2a402e6fdf19c0339c"
            }
          ],
          "repo": "https://gitlab.freedesktop.org/xorg/xserver",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "suse",
    "cwe_ids": [
      "CWE-126"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109904.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "range": [
              {
                "fixed": "21.1.26"
              },
              {
                "fixed": "24.1.15"
              }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StandardRange"
          }
        ]
      },
      {
        "extracted_events": [
          {
            "range": [
              {
                "fixed": "21.1.26"
              },
              {
                "fixed": "24.1.15"
              }
            ],
            "source": "CPE_FIELD",
            "strategy": "CPEApplicability"
          }
        ]
      },
      {
        "extracted_events": [
          {
            "range": [
              {
                "fixed": "24.1.15"
              },
              {
                "fixed": "21.1.26"
              }
            ],
            "source": "DESCRIPTION"
          }
        ]
      }
    ]
  },
  "details": "A buffer overread caused by an integer-overflow in Proc/SProcXResQueryClientIds in X.Org xwayland before 24.1.15 and X Server before 21.1.26 could be used by attackers on authenticated X clients to crash the server or leak out information.",
  "id": "CVE-2026-109904",
  "modified": "2026-11-14T02:30:34.266031588Z",
  "published": "2026-11-13T10:27:48.418Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109904.json"
    },
    {
      "type": "PACKAGE",
      "url": "https://gitlab.freedesktop.org/xorg/xserver/"
    },
    {
      "type": "FIX",
      "url": "https://gitlab.freedesktop.org/xorg/xserver/-/commit/a3899d75e180d73f2971af2a402e6fdf19c0339c"
    },
    {
      "type": "FIX",
      "url": "https://gitlab.freedesktop.org/xorg/xserver/-/commit/ff754b812597177412f2e2fa2b1dd1eecbeb75cf"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-109904"
    }
  ],
  "schema_version": "1.9.2",
  "severity": [
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "X.Org Server XRes QueryClientIds Request Size Overflow"
}