Xwayland: xorg: x.org x server: information disclosure and denial of service via out-of-bounds read in xkb geometry processing._CVE-2026-34000

{
    "lastseen": "",
    "description": "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.",
    "published": "2026-05-05T14:41:05.468Z",
    "modified": "2026-05-05T14:41:05.468Z",
    "type": "cve",
    "title": "Xwayland: xorg: x.org x server: information disclosure and denial of service via out-of-bounds read in xkb geometry processing.",
    "source": "redhat",
    "references": "https://access.redhat.com/security/cve/CVE-2026-34000\nhttps://bugzilla.redhat.com/show_bug.cgi?id=2451107",
    "id": "CVE-2026-34000",
    "bulletinFamily": "",
    "cwe": [
        "CWE-125"
    ],
    "cvelist": null,
    "sourceData": "",
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    "cvss": {
        "score": 6.1,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L",
        "version": "3.1"
    },
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        "baseScore": 0,
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        "privilegesRequired": "",
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        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
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    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Red Hat Enterprise Linux 10",
    "version": "",
    "vendor": "Red Hat",
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}