{
    "id": "CVE-2009-2692",
    "published": "2009-08-14 15:16:27",
    "last_modified": "2026-06-16 23:10:01",
    "cvss_score": "7.8",
    "cvss_severity": "HIGH",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
    "cwe": "CWE-908",
    "description": "The Linux kernel 2.6.0 through 2.6.30.4, and 2.4.4 through 2.4.37.4, does not initialize all function pointers for socket operations in proto_ops structures, which allows local users to trigger a NULL pointer dereference and gain privileges by using mmap to map page zero, placing arbitrary code on this page, and then invoking an unavailable operation, as demonstrated by the sendpage operation (sock_sendpage function) on a PF_PPPOX socket.",
    "epss_score": "0.14633",
    "epss_percentile": "0.96556",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-10-01 18:17:09",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "debian",
            "product": "debian_linux"
        },
        {
            "vendor": "linux",
            "product": "linux_kernel"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_desktop"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_eus"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_server"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_server_aus"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_workstation"
        },
        {
            "vendor": "suse",
            "product": "linux_enterprise_real_time"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "19933",
            "title": "Linux Kernel 2.4.4 < 2.4.37.4 / 2.6.0 < 2.6.30.4 - 'Sendpage' Local Privilege Escalation (Metasploit)",
            "date": "2012-07-19",
            "url": "https://www.exploit-db.com/exploits/19933"
        },
        {
            "source": "exploit-db",
            "ref_id": "9641",
            "title": "Linux Kernel 2.4/2.6 - 'sock_sendpage()' Local Privilege Escalation (3)",
            "date": "2009-09-11",
            "url": "https://www.exploit-db.com/exploits/9641"
        },
        {
            "source": "exploit-db",
            "ref_id": "9598",
            "title": "Linux Kernel 2.4/2.6 (Fedora 11) - 'sock_sendpage()' Local Privilege Escalation (2)",
            "date": "2009-09-09",
            "url": "https://www.exploit-db.com/exploits/9598"
        },
        {
            "source": "exploit-db",
            "ref_id": "9545",
            "title": "Linux Kernel 2.4.x/2.6.x (CentOS 4.8/5.3 / RHEL 4.8/5.3 / SuSE 10 SP2/11 / Ubuntu 8.10) (PPC) - 'sock_sendpage()' Local Privilege Escalation",
            "date": "2009-08-31",
            "url": "https://www.exploit-db.com/exploits/9545"
        },
        {
            "source": "exploit-db",
            "ref_id": "9479",
            "title": "Linux Kernel 2.4/2.6 (RedHat Linux 9 / Fedora Core 4 < 11 / Whitebox 4 / CentOS 4) - 'sock_sendpage()' Ring0 Privilege Escalation (5)",
            "date": "2009-08-24",
            "url": "https://www.exploit-db.com/exploits/9479"
        },
        {
            "source": "exploit-db",
            "ref_id": "9477",
            "title": "Linux Kernel 2.x (Android) - 'sock_sendpage()' Local Privilege Escalation",
            "date": "2009-08-18",
            "url": "https://www.exploit-db.com/exploits/9477"
        },
        {
            "source": "exploit-db",
            "ref_id": "9435",
            "title": "Linux Kernel 2.x (RedHat) - 'sock_sendpage()' Ring0 Privilege Escalation (1)",
            "date": "2009-08-14",
            "url": "https://www.exploit-db.com/exploits/9435"
        },
        {
            "source": "exploit-db",
            "ref_id": "9436",
            "title": "Linux Kernel 2.x - 'sock_sendpage()' Local Privilege Escalation (4)",
            "date": "2009-08-14",
            "url": "https://www.exploit-db.com/exploits/9436"
        }
    ],
    "refs_list": [
        "http://archives.neohapsis.com/archives/fulldisclosure/2009-08/0174.html",
        "http://blog.cr0.org/2009/08/linux-null-pointer-dereference-due-to.html",
        "http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.4.37.y.git%3Ba=commit%3Bh=c18d0fe535a73b219f960d1af3d0c264555a12e3",
        "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=e694958388c50148389b0e9b9e9e8945cf0f1b98",
        "http://grsecurity.net/~spender/wunderbar_emporium.tgz",
        "http://lists.opensuse.org/opensuse-security-announce/2009-09/msg00001.html",
        "http://rhn.redhat.com/errata/RHSA-2009-1222.html",
        "http://rhn.redhat.com/errata/RHSA-2009-1223.html",
        "http://secunia.com/advisories/36278",
        "http://secunia.com/advisories/36289",
        "http://secunia.com/advisories/36327",
        "http://secunia.com/advisories/36430",
        "http://secunia.com/advisories/37298",
        "http://secunia.com/advisories/37471",
        "http://support.avaya.com/css/P8/documents/100067254",
        "http://wiki.rpath.com/wiki/Advisories:rPSA-2009-0121",
        "http://www.debian.org/security/2009/dsa-1865",
        "http://www.exploit-db.com/exploits/19933",
        "http://www.exploit-db.com/exploits/9477",
        "http://www.kernel.org/pub/linux/kernel/v2.4/ChangeLog-2.4.37.5",
        "http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.30.5",
        "http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.31-rc6",
        "http://www.mandriva.com/security/advisories?name=MDVSA-2009:233",
        "http://www.openwall.com/lists/oss-security/2009/08/14/1",
        "http://www.redhat.com/support/errata/RHSA-2009-1233.html"
    ]
}