CVE-2026-34000

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"https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_e4s:9.2::appstream"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions", "versions": [{"status": "unaffected", "version": "0:21.1.3-10.el9_2", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server-Xwayland", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_e4s:9.2::appstream"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions", "versions": [{"status": "unaffected", "version": "0:1.20.11-20.el9_2", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_e4s:9.2::appstream"], "vendor": "Red Hat", "product": 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["cpe:/a:redhat:rhel_eus:9.6::appstream", "cpe:/a:redhat:rhel_eus:9.6::crb"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.6 Extended Update Support", "versions": [{"status": "unaffected", "version": "0:23.2.7-6.el9_6", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server-Xwayland", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_eus:9.6::appstream"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.6 Extended Update Support", "versions": [{"status": "unaffected", "version": "0:1.14.1-10.el9_6", "lessThan": "*", "versionType": "rpm"}], "packageName": "tigervnc", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/o:redhat:enterprise_linux:10"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 10", "packageName": "xorg-x11-server-Xwayland", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/o:redhat:enterprise_linux:6"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 6", "packageName": "xorg-x11-server", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unknown"}, {"cpes": ["cpe:/o:redhat:enterprise_linux:8"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8", "packageName": "tigervnc", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/o:redhat:enterprise_linux:8"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8", "packageName": "xorg-x11-server", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/o:redhat:enterprise_linux:8"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8", "packageName": "xorg-x11-server-Xwayland", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/o:redhat:enterprise_linux:9"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9", "packageName": "xorg-x11-server", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/o:redhat:enterprise_linux:9"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9", "packageName": "xorg-x11-server-Xwayland", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}]}], "published": "2026-05-05T16:16:11.647", "references": [{"url": "https://access.redhat.com/errata/RHSA-2026:19342", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:20547", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:20555", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:20557", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:20558", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:20560", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:20561", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:20562", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:20563", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:20575", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:20576", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:20590", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:21699", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:21712", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:21715", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:21716", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:21718", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:21741", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:21742", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:22424", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:22456", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:23254", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:23255", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:23496", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:24341", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/security/cve/CVE-2026-34000", "tags": ["Third Party Advisory"], "source": "secalert@redhat.com"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2451107", "tags": ["Issue Tracking", "Third Party Advisory"], "source": "secalert@redhat.com"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "secalert@redhat.com", "description": [{"lang": "en", "value": "CWE-125"}]}], "descriptions": [{"lang": "en", "value": "A flaw was found in the X.Org X server. This out-of-bounds read vulnerability in the XKB geometry processing, specifically within the `CheckSetGeom()` and `XkbAddGeomKeyAlias` functions, allows an attacker to read uninitialized or out-of-bounds memory. An attacker with a connection to the X11 server, either locally or remotely, can exploit this without user interaction. This could lead to the disclosure of memory contents or cause a denial of service by crashing the server."}, {"lang": "es", "value": "Se encontr\u00f3 una falla en el servidor X de X.Org. Esta vulnerabilidad de lectura fuera de l\u00edmites en el procesamiento de geometr\u00eda XKB, espec\u00edficamente dentro de las funciones \u2019CheckSetGeom()\u2019 y \u2019XkbAddGeomKeyAlias\u2019, permite a un atacante leer memoria no inicializada o fuera de l\u00edmites. Un atacante con una conexi\u00f3n al servidor X11, ya sea localmente o remotamente, puede explotar esto sin interacci\u00f3n del usuario. Esto podr\u00eda llevar a la divulgaci\u00f3n del contenido de la memoria o causar una denegaci\u00f3n de servicio al bloquear el servidor."}], "lastModified": "2026-10-26T19:10:00.163", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:x.org:x_server:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "858025BB-24A3-42C3-B157-486862B37124"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2F6AB192-9D7D-4A9A-8995-E53A9DE9EAFC"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "142AD0DD-4CF3-4D74-9442-459CE3347E3A"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F4CFF558-3C47-480D-A2F0-BABF26042943"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7F6FB57C-2BC7-487C-96DD-132683AEB35D"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D65C2163-CFC2-4ABB-8F4E-CB09CEBD006C"}], "operator": "OR"}]}], "sourceIdentifier": "secalert@redhat.com"}