Vulnerability Instance

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{
    "url": "http://public2.vulnerablecode.io/api/vulnerabilities/87580?format=api",
    "vulnerability_id": "VCID-t5bd-vweu-zudg",
    "summary": "kernel: tight loop and no preemption can cause system stall",
    "aliases": [
        {
            "alias": "CVE-2011-4621"
        }
    ],
    "fixed_packages": [],
    "affected_packages": [
        {
            "url": "http://public2.vulnerablecode.io/api/packages/126430?format=api",
            "purl": "pkg:rpm/redhat/kernel@2.6.32-220.2.1?arch=el6",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-3qpn-v9pw-vbgs"
                },
                {
                    "vulnerability": "VCID-t5bd-vweu-zudg"
                }
            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:rpm/redhat/kernel@2.6.32-220.2.1%3Farch=el6"
        }
    ],
    "references": [
        {
            "reference_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2011-4621.json",
            "reference_id": "",
            "reference_type": "",
            "scores": [],
            "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2011-4621.json"
        },
        {
            "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2011-4621",
            "reference_id": "",
            "reference_type": "",
            "scores": [
                {
                    "value": "0.00064",
                    "scoring_system": "epss",
                    "scoring_elements": "0.19899",
                    "published_at": "2026-04-01T12:55:00Z"
                },
                {
                    "value": "0.00064",
                    "scoring_system": "epss",
                    "scoring_elements": "0.20044",
                    "published_at": "2026-04-02T12:55:00Z"
                },
                {
                    "value": "0.00064",
                    "scoring_system": "epss",
                    "scoring_elements": "0.20103",
                    "published_at": "2026-04-04T12:55:00Z"
                },
                {
                    "value": "0.00064",
                    "scoring_system": "epss",
                    "scoring_elements": "0.19831",
                    "published_at": "2026-04-07T12:55:00Z"
                },
                {
                    "value": "0.00064",
                    "scoring_system": "epss",
                    "scoring_elements": "0.19911",
                    "published_at": "2026-04-08T12:55:00Z"
                },
                {
                    "value": "0.00064",
                    "scoring_system": "epss",
                    "scoring_elements": "0.19966",
                    "published_at": "2026-04-09T12:55:00Z"
                },
                {
                    "value": "0.00064",
                    "scoring_system": "epss",
                    "scoring_elements": "0.19984",
                    "published_at": "2026-04-11T12:55:00Z"
                },
                {
                    "value": "0.00064",
                    "scoring_system": "epss",
                    "scoring_elements": "0.1994",
                    "published_at": "2026-04-12T12:55:00Z"
                },
                {
                    "value": "0.00064",
                    "scoring_system": "epss",
                    "scoring_elements": "0.19881",
                    "published_at": "2026-04-13T12:55:00Z"
                },
                {
                    "value": "0.00064",
                    "scoring_system": "epss",
                    "scoring_elements": "0.19858",
                    "published_at": "2026-04-16T12:55:00Z"
                },
                {
                    "value": "0.00064",
                    "scoring_system": "epss",
                    "scoring_elements": "0.19863",
                    "published_at": "2026-04-18T12:55:00Z"
                },
                {
                    "value": "0.00064",
                    "scoring_system": "epss",
                    "scoring_elements": "0.19861",
                    "published_at": "2026-04-21T12:55:00Z"
                },
                {
                    "value": "0.00064",
                    "scoring_system": "epss",
                    "scoring_elements": "0.19757",
                    "published_at": "2026-04-24T12:55:00Z"
                },
                {
                    "value": "0.00064",
                    "scoring_system": "epss",
                    "scoring_elements": "0.1975",
                    "published_at": "2026-04-26T12:55:00Z"
                },
                {
                    "value": "0.00064",
                    "scoring_system": "epss",
                    "scoring_elements": "0.1972",
                    "published_at": "2026-04-29T12:55:00Z"
                },
                {
                    "value": "0.00064",
                    "scoring_system": "epss",
                    "scoring_elements": "0.19627",
                    "published_at": "2026-05-05T12:55:00Z"
                },
                {
                    "value": "0.00064",
                    "scoring_system": "epss",
                    "scoring_elements": "0.19704",
                    "published_at": "2026-05-07T12:55:00Z"
                }
            ],
            "url": "https://api.first.org/data/v1/epss?cve=CVE-2011-4621"
        },
        {
            "reference_url": "https://bugzilla.redhat.com/show_bug.cgi?id=769711",
            "reference_id": "769711",
            "reference_type": "",
            "scores": [],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=769711"
        },
        {
            "reference_url": "https://access.redhat.com/errata/RHSA-2011:1849",
            "reference_id": "RHSA-2011:1849",
            "reference_type": "",
            "scores": [],
            "url": "https://access.redhat.com/errata/RHSA-2011:1849"
        },
        {
            "reference_url": "https://usn.ubuntu.com/1081-1/",
            "reference_id": "USN-1081-1",
            "reference_type": "",
            "scores": [],
            "url": "https://usn.ubuntu.com/1081-1/"
        },
        {
            "reference_url": "https://usn.ubuntu.com/1187-1/",
            "reference_id": "USN-1187-1",
            "reference_type": "",
            "scores": [],
            "url": "https://usn.ubuntu.com/1187-1/"
        },
        {
            "reference_url": "https://usn.ubuntu.com/1212-1/",
            "reference_id": "USN-1212-1",
            "reference_type": "",
            "scores": [],
            "url": "https://usn.ubuntu.com/1212-1/"
        },
        {
            "reference_url": "https://usn.ubuntu.com/1394-1/",
            "reference_id": "USN-1394-1",
            "reference_type": "",
            "scores": [],
            "url": "https://usn.ubuntu.com/1394-1/"
        }
    ],
    "weaknesses": [],
    "exploits": [],
    "severity_range_score": null,
    "exploitability": "0.5",
    "weighted_severity": "0.0",
    "risk_score": null,
    "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-t5bd-vweu-zudg"
}