{
    "id": "CVE-2009-3234",
    "published": "2009-09-17 10:30:01",
    "last_modified": "2026-06-16 23:11:11",
    "cvss_score": "4.9",
    "cvss_severity": "MEDIUM",
    "cvss_version": "2.0",
    "cvss_vector": "AV:L/AC:L/Au:N/C:N/I:N/A:C",
    "cwe": "CWE-119",
    "description": "Buffer overflow in the perf_copy_attr function in kernel/perf_counter.c in the Linux kernel 2.6.31-rc1 allows local users to cause a denial of service (crash) and execute arbitrary code via a \"big size data\" to the perf_counter_open system call.",
    "epss_score": "0.01795",
    "epss_percentile": "0.77795",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-10-09 18:17:09",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "linux",
            "product": "linux_kernel"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "33228",
            "title": "Linux Kernel 2.6.31 - 'perf_counter_open()' Local Buffer Overflow",
            "date": "2009-09-16",
            "url": "https://www.exploit-db.com/exploits/33228"
        }
    ],
    "refs_list": [
        "http://article.gmane.org/gmane.linux.kernel/890654",
        "http://www.openwall.com/lists/oss-security/2009/09/16/1",
        "http://www.openwall.com/lists/oss-security/2009/09/17/13",
        "http://www.securityfocus.com/bid/36423",
        "http://article.gmane.org/gmane.linux.kernel/890654",
        "http://www.openwall.com/lists/oss-security/2009/09/16/1",
        "http://www.openwall.com/lists/oss-security/2009/09/17/13",
        "http://www.securityfocus.com/bid/36423"
    ]
}