{
    "id": "CVE-2019-18805",
    "published": "2019-11-07 14:15:11",
    "last_modified": "2026-06-17 02:25:22",
    "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-190",
    "description": "An issue was discovered in net/ipv4/sysctl_net_ipv4.c in the Linux kernel before 5.0.11. There is a net/ipv4/tcp_input.c signed integer overflow in tcp_ack_update_rtt() when userspace writes a very large integer to /proc/sys/net/ipv4/tcp_min_rtt_wlen, leading to a denial of service or possibly unspecified other impact, aka CID-19fad20d15a6.",
    "epss_score": "0.03431",
    "epss_percentile": "0.88626",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-09 18:17:22",
    "priority": {
        "rank": 3,
        "label": "In your normal cycle",
        "why": "Critical by CVSS (9.8), but no sign of active exploitation."
    },
    "products": [
        {
            "vendor": "broadcom",
            "product": "fabric_operating_system"
        },
        {
            "vendor": "linux",
            "product": "linux_kernel"
        },
        {
            "vendor": "netapp",
            "product": "active_iq_unified_manager"
        },
        {
            "vendor": "netapp",
            "product": "aff_a400"
        },
        {
            "vendor": "netapp",
            "product": "aff_a400_firmware"
        },
        {
            "vendor": "netapp",
            "product": "aff_a700s"
        },
        {
            "vendor": "netapp",
            "product": "aff_a700s_firmware"
        },
        {
            "vendor": "netapp",
            "product": "data_availability_services"
        },
        {
            "vendor": "netapp",
            "product": "e-series_santricity_os_controller"
        },
        {
            "vendor": "netapp",
            "product": "fas8300"
        },
        {
            "vendor": "netapp",
            "product": "fas8300_firmware"
        },
        {
            "vendor": "netapp",
            "product": "fas8700"
        },
        {
            "vendor": "netapp",
            "product": "fas8700_firmware"
        },
        {
            "vendor": "netapp",
            "product": "h610s"
        },
        {
            "vendor": "netapp",
            "product": "h610s_firmware"
        },
        {
            "vendor": "netapp",
            "product": "hci_compute_node"
        },
        {
            "vendor": "netapp",
            "product": "hci_management_node"
        },
        {
            "vendor": "netapp",
            "product": "hci_storage_node"
        },
        {
            "vendor": "netapp",
            "product": "solidfire"
        },
        {
            "vendor": "netapp",
            "product": "steelstore_cloud_integrated_storage"
        },
        {
            "vendor": "opensuse",
            "product": "leap"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00035.html",
        "http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00039.html",
        "https://access.redhat.com/errata/RHSA-2020:0740",
        "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.11",
        "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=19fad20d15a6494f47f85d869f00b11343ee5c78",
        "https://security.netapp.com/advisory/ntap-20191205-0001/",
        "http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00035.html",
        "http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00039.html",
        "https://access.redhat.com/errata/RHSA-2020:0740",
        "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.11",
        "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=19fad20d15a6494f47f85d869f00b11343ee5c78",
        "https://security.netapp.com/advisory/ntap-20191205-0001/"
    ]
}