{
    "id": "CVE-2021-33574",
    "published": "2021-05-25 22:15:10",
    "last_modified": "2026-06-17 03:54:48",
    "cvss_score": "9.8",
    "cvss_severity": "CRITICAL",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
    "cwe": "CWE-416",
    "description": "The mq_notify function in the GNU C Library (aka glibc) versions 2.32 and 2.33 has a use-after-free. It may use the notification thread attributes object (passed through its struct sigevent parameter) after it has been freed by the caller, leading to a denial of service (application crash) or possibly unspecified other impact.",
    "epss_score": "0.02874",
    "epss_percentile": "0.86452",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-11 18:17:26",
    "priority": {
        "rank": 3,
        "label": "In your normal cycle",
        "why": "Critical by CVSS (9.8), but no sign of active exploitation."
    },
    "products": [
        {
            "vendor": "debian",
            "product": "debian_linux"
        },
        {
            "vendor": "fedoraproject",
            "product": "fedora"
        },
        {
            "vendor": "gnu",
            "product": "glibc"
        },
        {
            "vendor": "netapp",
            "product": "cloud_backup"
        },
        {
            "vendor": "netapp",
            "product": "e-series_santricity_os_controller"
        },
        {
            "vendor": "netapp",
            "product": "h300e"
        },
        {
            "vendor": "netapp",
            "product": "h300e_firmware"
        },
        {
            "vendor": "netapp",
            "product": "h300s"
        },
        {
            "vendor": "netapp",
            "product": "h300s_firmware"
        },
        {
            "vendor": "netapp",
            "product": "h410s"
        },
        {
            "vendor": "netapp",
            "product": "h410s_firmware"
        },
        {
            "vendor": "netapp",
            "product": "h500e"
        },
        {
            "vendor": "netapp",
            "product": "h500e_firmware"
        },
        {
            "vendor": "netapp",
            "product": "h500s"
        },
        {
            "vendor": "netapp",
            "product": "h500s_firmware"
        },
        {
            "vendor": "netapp",
            "product": "h700e"
        },
        {
            "vendor": "netapp",
            "product": "h700e_firmware"
        },
        {
            "vendor": "netapp",
            "product": "h700s"
        },
        {
            "vendor": "netapp",
            "product": "h700s_firmware"
        },
        {
            "vendor": "netapp",
            "product": "solidfire_baseboard_management_controller_firmware"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "https://lists.debian.org/debian-lts-announce/2022/10/msg00021.html",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KJYYIMDDYOHTP2PORLABTOHYQYYREZDD/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RBUUWUGXVILQXVWEOU7N42ICHPJNAEUP/",
        "https://security.gentoo.org/glsa/202107-07",
        "https://security.netapp.com/advisory/ntap-20210629-0005/",
        "https://sourceware.org/bugzilla/show_bug.cgi?id=27896",
        "https://sourceware.org/bugzilla/show_bug.cgi?id=27896#c1",
        "https://lists.debian.org/debian-lts-announce/2022/10/msg00021.html",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KJYYIMDDYOHTP2PORLABTOHYQYYREZDD/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RBUUWUGXVILQXVWEOU7N42ICHPJNAEUP/",
        "https://security.gentoo.org/glsa/202107-07",
        "https://security.netapp.com/advisory/ntap-20210629-0005/",
        "https://sourceware.org/bugzilla/show_bug.cgi?id=27896",
        "https://sourceware.org/bugzilla/show_bug.cgi?id=27896#c1"
    ]
}