{
    "id": "CVE-2011-3188",
    "published": "2012-05-24 23:55:02",
    "last_modified": "2026-06-16 23:32:49",
    "cvss_score": "9.1",
    "cvss_severity": "CRITICAL",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H",
    "cwe": null,
    "description": "The (1) IPv4 and (2) IPv6 implementations in the Linux kernel before 3.1 use a modified MD4 algorithm to generate sequence numbers and Fragment Identification values, which makes it easier for remote attackers to cause a denial of service (disrupted networking) or hijack network sessions by predicting these values and sending crafted packets.",
    "epss_score": "0.05028",
    "epss_percentile": "0.92039",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-07 18:17:09",
    "priority": {
        "rank": 3,
        "label": "In your normal cycle",
        "why": "Critical by CVSS (9.1), but no sign of active exploitation."
    },
    "products": [
        {
            "vendor": "f5",
            "product": "arx"
        },
        {
            "vendor": "f5",
            "product": "big-ip_access_policy_manager"
        },
        {
            "vendor": "f5",
            "product": "big-ip_analytics"
        },
        {
            "vendor": "f5",
            "product": "big-ip_application_security_manager"
        },
        {
            "vendor": "f5",
            "product": "big-ip_edge_gateway"
        },
        {
            "vendor": "f5",
            "product": "big-ip_global_traffic_manager"
        },
        {
            "vendor": "f5",
            "product": "big-ip_link_controller"
        },
        {
            "vendor": "f5",
            "product": "big-ip_local_traffic_manager"
        },
        {
            "vendor": "f5",
            "product": "big-ip_protocol_security_module"
        },
        {
            "vendor": "f5",
            "product": "big-ip_wan_optimization_manager"
        },
        {
            "vendor": "f5",
            "product": "big-ip_webaccelerator"
        },
        {
            "vendor": "f5",
            "product": "enterprise_manager"
        },
        {
            "vendor": "f5",
            "product": "firepass"
        },
        {
            "vendor": "linux",
            "product": "linux_kernel"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=6e5714eaf77d79ae1c8b47e3e040ff5411b717ec",
        "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=bc0b96b54a21246e377122d54569eef71cec535f",
        "http://marc.info/?l=bugtraq&m=139447903326211&w=2",
        "http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1",
        "http://www.openwall.com/lists/oss-security/2011/08/23/2",
        "https://bugzilla.redhat.com/show_bug.cgi?id=732658",
        "https://github.com/torvalds/linux/commit/6e5714eaf77d79ae1c8b47e3e040ff5411b717ec",
        "https://github.com/torvalds/linux/commit/bc0b96b54a21246e377122d54569eef71cec535f",
        "https://support.f5.com/csp/article/K15301?utm_source=f5support&amp%3Butm_medium=RSS",
        "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=6e5714eaf77d79ae1c8b47e3e040ff5411b717ec",
        "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=bc0b96b54a21246e377122d54569eef71cec535f",
        "http://marc.info/?l=bugtraq&m=139447903326211&w=2",
        "http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1",
        "http://www.openwall.com/lists/oss-security/2011/08/23/2",
        "https://bugzilla.redhat.com/show_bug.cgi?id=732658",
        "https://github.com/torvalds/linux/commit/6e5714eaf77d79ae1c8b47e3e040ff5411b717ec",
        "https://github.com/torvalds/linux/commit/bc0b96b54a21246e377122d54569eef71cec535f",
        "https://support.f5.com/csp/article/K15301?utm_source=f5support&amp%3Butm_medium=RSS"
    ]
}