{
    "id": "CVE-2021-22600",
    "published": "2022-01-26 14:15:08",
    "last_modified": "2026-06-17 03:37:27",
    "cvss_score": "6.6",
    "cvss_severity": "MEDIUM",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:H",
    "cwe": "CWE-415",
    "description": "A double free bug in packet_set_ring() in net/packet/af_packet.c can be exploited by a local user through crafted syscalls to escalate privileges or deny service. We recommend upgrading kernel past the effected versions or rebuilding past ec6af094ea28f0f2dda1a6a33b14cd57e36a9755",
    "epss_score": "0.06533",
    "epss_percentile": "0.93559",
    "kev": 1,
    "kev_due": "2022-05-02",
    "has_exploit": 0,
    "updated_at": "2026-09-26 18:28:48",
    "priority": {
        "rank": 1,
        "label": "Patch first",
        "why": "On CISA KEV — known exploited in the wild, due 2022-05-02."
    },
    "products": [
        {
            "vendor": "debian",
            "product": "debian_linux"
        },
        {
            "vendor": "linux",
            "product": "linux_kernel"
        },
        {
            "vendor": "netapp",
            "product": "8300"
        },
        {
            "vendor": "netapp",
            "product": "8300_firmware"
        },
        {
            "vendor": "netapp",
            "product": "8700"
        },
        {
            "vendor": "netapp",
            "product": "8700_firmware"
        },
        {
            "vendor": "netapp",
            "product": "a400"
        },
        {
            "vendor": "netapp",
            "product": "a400_firmware"
        },
        {
            "vendor": "netapp",
            "product": "c400"
        },
        {
            "vendor": "netapp",
            "product": "c400_firmware"
        },
        {
            "vendor": "netapp",
            "product": "h300s"
        },
        {
            "vendor": "netapp",
            "product": "h300s_firmware"
        },
        {
            "vendor": "netapp",
            "product": "h410c"
        },
        {
            "vendor": "netapp",
            "product": "h410c_firmware"
        },
        {
            "vendor": "netapp",
            "product": "h410s"
        },
        {
            "vendor": "netapp",
            "product": "h410s_firmware"
        },
        {
            "vendor": "netapp",
            "product": "h500s"
        },
        {
            "vendor": "netapp",
            "product": "h500s_firmware"
        },
        {
            "vendor": "netapp",
            "product": "h700s"
        },
        {
            "vendor": "netapp",
            "product": "h700s_firmware"
        }
    ],
    "kev_detail": {
        "cve_id": "CVE-2021-22600",
        "date_added": "2022-04-11",
        "due_date": "2022-05-02",
        "vendor": "Linux",
        "product": "Kernel",
        "name": "Linux Kernel Privilege Escalation Vulnerability",
        "ransomware": 0
    },
    "exploits": [],
    "refs_list": [
        "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=ec6af094ea28f0f2dda1a6a33b14cd57e36a9755",
        "https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html",
        "https://security.netapp.com/advisory/ntap-20230110-0002/",
        "https://www.debian.org/security/2022/dsa-5096",
        "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=ec6af094ea28f0f2dda1a6a33b14cd57e36a9755",
        "https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html",
        "https://security.netapp.com/advisory/ntap-20230110-0002/",
        "https://www.debian.org/security/2022/dsa-5096",
        "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22600"
    ]
}