{
    "id": "CVE-2017-18017",
    "published": "2018-01-03 06:29:00",
    "last_modified": "2026-06-17 01:12:02",
    "cvss_score": "9.8",
    "cvss_severity": "CRITICAL",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
    "cwe": "CWE-416",
    "description": "The tcpmss_mangle_packet function in net/netfilter/xt_TCPMSS.c in the Linux kernel before 4.11, and 4.9.x before 4.9.36, allows remote attackers to cause a denial of service (use-after-free and memory corruption) or possibly have unspecified other impact by leveraging the presence of xt_TCPMSS in an iptables action.",
    "epss_score": "0.52841",
    "epss_percentile": "0.98942",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-02 18:17:19",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "EPSS 52.8% — above the 10% action threshold."
    },
    "products": [
        {
            "vendor": "arista",
            "product": "eos"
        },
        {
            "vendor": "canonical",
            "product": "ubuntu_linux"
        },
        {
            "vendor": "debian",
            "product": "debian_linux"
        },
        {
            "vendor": "f5",
            "product": "arx"
        },
        {
            "vendor": "linux",
            "product": "linux_kernel"
        },
        {
            "vendor": "openstack",
            "product": "cloud_magnum_orchestration"
        },
        {
            "vendor": "opensuse",
            "product": "leap"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_desktop"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_eus"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_for_real_time"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_for_real_time_for_nfv"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_server"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_server_aus"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_server_tus"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_workstation"
        },
        {
            "vendor": "redhat",
            "product": "mrg_realtime"
        },
        {
            "vendor": "suse",
            "product": "caas_platform"
        },
        {
            "vendor": "suse",
            "product": "linux_enterprise_debuginfo"
        },
        {
            "vendor": "suse",
            "product": "linux_enterprise_desktop"
        },
        {
            "vendor": "suse",
            "product": "linux_enterprise_high_availability"
        },
        {
            "vendor": "suse",
            "product": "linux_enterprise_high_availability_extension"
        },
        {
            "vendor": "suse",
            "product": "linux_enterprise_live_patching"
        },
        {
            "vendor": "suse",
            "product": "linux_enterprise_module_for_public_cloud"
        },
        {
            "vendor": "suse",
            "product": "linux_enterprise_point_of_sale"
        },
        {
            "vendor": "suse",
            "product": "linux_enterprise_real_time_extension"
        },
        {
            "vendor": "suse",
            "product": "linux_enterprise_server"
        },
        {
            "vendor": "suse",
            "product": "linux_enterprise_software_development_kit"
        },
        {
            "vendor": "suse",
            "product": "linux_enterprise_workstation_extension"
        },
        {
            "vendor": "suse",
            "product": "openstack_cloud"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2638fd0f92d4397884fd991d8f4925cb3f081901",
        "http://lists.opensuse.org/opensuse-security-announce/2018-02/msg00008.html",
        "http://lists.opensuse.org/opensuse-security-announce/2018-02/msg00013.html",
        "http://lists.opensuse.org/opensuse-security-announce/2018-02/msg00015.html",
        "http://lists.opensuse.org/opensuse-security-announce/2018-02/msg00038.html",
        "http://lists.opensuse.org/opensuse-security-announce/2018-02/msg00047.html",
        "http://lists.opensuse.org/opensuse-security-announce/2018-03/msg00030.html",
        "http://lists.opensuse.org/opensuse-security-announce/2018-03/msg00067.html",
        "http://lists.opensuse.org/opensuse-security-announce/2018-03/msg00070.html",
        "http://lists.opensuse.org/opensuse-security-announce/2018-03/msg00072.html",
        "http://lists.opensuse.org/opensuse-security-announce/2018-04/msg00014.html",
        "http://patchwork.ozlabs.org/patch/746618/",
        "http://www.securityfocus.com/bid/102367",
        "http://www.ubuntu.com/usn/USN-3583-1",
        "http://www.ubuntu.com/usn/USN-3583-2",
        "https://access.redhat.com/errata/RHSA-2018:0676",
        "https://access.redhat.com/errata/RHSA-2018:1062",
        "https://access.redhat.com/errata/RHSA-2018:1130",
        "https://access.redhat.com/errata/RHSA-2018:1170",
        "https://access.redhat.com/errata/RHSA-2018:1319",
        "https://access.redhat.com/errata/RHSA-2018:1737",
        "https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1739765",
        "https://github.com/torvalds/linux/commit/2638fd0f92d4397884fd991d8f4925cb3f081901",
        "https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0",
        "https://lists.debian.org/debian-lts-announce/2018/05/msg00000.html"
    ]
}