{
    "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2021-33033",
        "STATE": "PUBLIC"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "n/a",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "n/a"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "n/a"
                }
            ]
        }
    },
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "The Linux kernel before 5.11.14 has a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the CIPSO and CALIPSO refcounting for the DOI definitions is mishandled, aka CID-ad5d07f4a9cd. This leads to writing an arbitrary value."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "n/a"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "url": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.7",
                "refsource": "MISC",
                "name": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.7"
            },
            {
                "url": "https://syzkaller.appspot.com/bug?id=96e7d345748d8814901c91cd92084ed04b46701e",
                "refsource": "MISC",
                "name": "https://syzkaller.appspot.com/bug?id=96e7d345748d8814901c91cd92084ed04b46701e"
            },
            {
                "url": "https://sites.google.com/view/syzscope/kasan-use-after-free-read-in-cipso_v4_genopt",
                "refsource": "MISC",
                "name": "https://sites.google.com/view/syzscope/kasan-use-after-free-read-in-cipso_v4_genopt"
            },
            {
                "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ad5d07f4a9cd671233ae20983848874731102c08",
                "refsource": "MISC",
                "name": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ad5d07f4a9cd671233ae20983848874731102c08"
            },
            {
                "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1165affd484889d4986cf3b724318935a0b120d8",
                "refsource": "MISC",
                "name": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1165affd484889d4986cf3b724318935a0b120d8"
            },
            {
                "url": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.14",
                "refsource": "MISC",
                "name": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.14"
            }
        ]
    }
}