{
    "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2018-18397",
        "STATE": "PUBLIC"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "n/a",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "n/a"
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                            }
                        ]
                    },
                    "vendor_name": "n/a"
                }
            ]
        }
    },
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "The userfaultfd implementation in the Linux kernel before 4.19.7 mishandles access control for certain UFFDIO_ ioctl calls, as demonstrated by allowing local users to write data into holes in a tmpfs file (if the user has read-only access to that file, and that file contains holes), related to fs/userfaultfd.c and mm/userfaultfd.c."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "n/a"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "name": "USN-3903-2",
                "refsource": "UBUNTU",
                "url": "https://usn.ubuntu.com/3903-2/"
            },
            {
                "name": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.87",
                "refsource": "MISC",
                "url": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.87"
            },
            {
                "name": "https://github.com/torvalds/linux/commit/29ec90660d68bbdd69507c1c8b4e33aa299278b1",
                "refsource": "MISC",
                "url": "https://github.com/torvalds/linux/commit/29ec90660d68bbdd69507c1c8b4e33aa299278b1"
            },
            {
                "name": "USN-3901-2",
                "refsource": "UBUNTU",
                "url": "https://usn.ubuntu.com/3901-2/"
            },
            {
                "name": "RHSA-2019:0324",
                "refsource": "REDHAT",
                "url": "https://access.redhat.com/errata/RHSA-2019:0324"
            },
            {
                "name": "https://bugs.chromium.org/p/project-zero/issues/detail?id=1700",
                "refsource": "MISC",
                "url": "https://bugs.chromium.org/p/project-zero/issues/detail?id=1700"
            },
            {
                "name": "RHSA-2019:0202",
                "refsource": "REDHAT",
                "url": "https://access.redhat.com/errata/RHSA-2019:0202"
            },
            {
                "name": "RHSA-2019:0163",
                "refsource": "REDHAT",
                "url": "https://access.redhat.com/errata/RHSA-2019:0163"
            },
            {
                "name": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=29ec90660d68bbdd69507c1c8b4e33aa299278b1",
                "refsource": "MISC",
                "url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=29ec90660d68bbdd69507c1c8b4e33aa299278b1"
            },
            {
                "name": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.7",
                "refsource": "MISC",
                "url": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.7"
            },
            {
                "name": "USN-3901-1",
                "refsource": "UBUNTU",
                "url": "https://usn.ubuntu.com/3901-1/"
            },
            {
                "name": "USN-3903-1",
                "refsource": "UBUNTU",
                "url": "https://usn.ubuntu.com/3903-1/"
            },
            {
                "refsource": "REDHAT",
                "name": "RHSA-2019:0831",
                "url": "https://access.redhat.com/errata/RHSA-2019:0831"
            },
            {
                "refsource": "REDHAT",
                "name": "RHBA-2019:0327",
                "url": "https://access.redhat.com/errata/RHBA-2019:0327"
            }
        ]
    }
}