Corosync: corosync: denial of service and information disclosure via crafted udp packet_CVE-2026-35091

{
    "lastseen": "",
    "description": "A flaw was found in Corosync. A remote unauthenticated attacker can exploit a wrong return value vulnerability in the Corosync membership commit token sanity check by sending a specially crafted User Datagram Protocol (UDP) packet. This can lead to an out-of-bounds read, causing a denial of service (DoS) and potentially disclosing limited memory contents. This vulnerability affects Corosync when running in totemudp/totemudpu mode, which is the default configuration.",
    "published": "2026-04-01T13:18:53.738Z",
    "modified": "2026-04-06T07:32:08.097Z",
    "type": "cve",
    "title": "Corosync: corosync: denial of service and information disclosure via crafted udp packet",
    "source": "redhat",
    "references": "https://access.redhat.com/security/cve/CVE-2026-35091\nhttps://bugzilla.redhat.com/show_bug.cgi?id=2453169\nhttps://bugzilla.redhat.com/show_bug.cgi?id=2453813",
    "id": "CVE-2026-35091",
    "bulletinFamily": "",
    "cwe": [
        "CWE-253"
    ],
    "cvelist": null,
    "sourceData": "",
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    "cvss": {
        "score": 8.2,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
        "version": "3.1"
    },
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        "baseScore": 0,
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        "confidentialityImpact": "",
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    "href": "",
    "category_name": "CVE",
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    "product": "Red Hat Enterprise Linux 10",
    "version": "",
    "vendor": "Red Hat",
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}