Dnsmasq: dnsmasq: denial of service due to out-of-bounds write in dhcp bootreply processing_CVE-2026-6507

{
    "lastseen": "",
    "description": "A flaw was found in dnsmasq. A remote attacker could exploit an out-of-bounds write vulnerability by sending a specially crafted BOOTREPLY (Bootstrap Protocol Reply) packet to a dnsmasq server configured with the `--dhcp-split-relay` option. This can lead to memory corruption, causing the dnsmasq daemon to crash and resulting in a denial of service (DoS).",
    "published": "2026-04-17T12:23:31.852Z",
    "modified": "2026-04-17T12:28:35.020Z",
    "type": "cve",
    "title": "Dnsmasq: dnsmasq: denial of service due to out-of-bounds write in dhcp bootreply processing",
    "source": "redhat",
    "references": "https://access.redhat.com/security/cve/CVE-2026-6507\nhttps://bugzilla.redhat.com/show_bug.cgi?id=2459181",
    "id": "CVE-2026-6507",
    "bulletinFamily": "",
    "cwe": [
        "CWE-787"
    ],
    "cvelist": null,
    "sourceData": "",
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    "cvss": {
        "score": 7.5,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
        "version": "3.1"
    },
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        "baseScore": 0,
        "baseSeverity": "",
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        "privilegesRequired": "",
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        "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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}