{
  "schema_version": "1.7.0",
  "id": "MGASA-2026-0155",
  "published": "2026-05-26T01:55:28Z",
  "modified": "2026-05-26T01:07:42Z",
  "summary": "Updated x11-server, x11-server-xwayland & tigervnc packages fix security vulnerabilities",
  "details": "XKB Integer Underflow in XkbSetCompatMap(). (CVE-2026-33999)\nXKB Out-of-bounds Read in CheckSetGeom(). (CVE-2026-34000)\nXSYNC Use-after-free in miSyncTriggerFence(). (CVE-2026-34001)\nXKB Out-of-bounds read in CheckModifierMap(). (CVE-2026-34002)\nXKB Buffer overflow in CheckKeyTypes(). (CVE-2026-34003)\n",
  "upstream": [
    "CVE-2026-33999",
    "CVE-2026-34000",
    "CVE-2026-34001",
    "CVE-2026-34002",
    "CVE-2026-34003"
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://advisories.mageia.org/MGASA-2026-0155.html"
    },
    {
      "type": "REPORT",
      "url": "https://bugs.mageia.org/show_bug.cgi?id=35366"
    },
    {
      "type": "WEB",
      "url": "https://www.openwall.com/lists/oss-security/2026/04/14/8"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JGQLR43Z7T6IISLCOC2Q4WB3D4YWB4QS/"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RULWKTYNOMHH3NTJ36SDNJVWKXYJ4VVO/"
    }
  ],
  "affected": [
    {
      "package": {
        "ecosystem": "Mageia:9",
        "name": "x11-server",
        "purl": "pkg:rpm/mageia/x11-server?arch=source&distro=mageia-9"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "21.1.8-7.10.mga9"
            }
          ]
        }
      ],
      "ecosystem_specific": {
        "section": "core"
      }
    },
    {
      "package": {
        "ecosystem": "Mageia:9",
        "name": "x11-server-xwayland",
        "purl": "pkg:rpm/mageia/x11-server-xwayland?arch=source&distro=mageia-9"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "22.1.9-1.10.mga9"
            }
          ]
        }
      ],
      "ecosystem_specific": {
        "section": "core"
      }
    },
    {
      "package": {
        "ecosystem": "Mageia:9",
        "name": "tigervnc",
        "purl": "pkg:rpm/mageia/tigervnc?arch=source&distro=mageia-9"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.13.1-2.11.mga9"
            }
          ]
        }
      ],
      "ecosystem_specific": {
        "section": "core"
      }
    }
  ],
  "credits": [
    {
      "name": "Mageia",
      "type": "COORDINATOR",
      "contact": [
        "https://wiki.mageia.org/en/Packages_Security_Team"
      ]
    }
  ]
}