{
  "threat_severity" : "Moderate",
  "public_date" : "2017-11-01T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: Race condition in drivers/md/dm.c:dm_get_from_kobject() allows local users to cause a denial of service",
    "id" : "1550811",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=1550811"
  },
  "cvss3" : {
    "cvss3_base_score" : "4.7",
    "cvss3_scoring_vector" : "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
    "status" : "verified"
  },
  "cwe" : "CWE-362->CWE-400",
  "details" : [ "The dm_get_from_kobject function in drivers/md/dm.c in the Linux kernel before 4.14.3 allow local users to cause a denial of service (BUG) by leveraging a race condition with __dm_destroy during creation and removal of DM devices.", "The Linux kernel, before version 4.14.3, is vulnerable to a denial of service in drivers/md/dm.c:dm_get_from_kobject() which can be caused by local users leveraging a race condition with __dm_destroy() during creation and removal of DM devices. Only privileged local users (with CAP_SYS_ADMIN capability) can directly perform the ioctl operations for dm device creation and removal and this would typically be outside the direct control of the unprivileged attacker." ],
  "statement" : "This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5, as the code with the flaw is not present in this product.",
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 6",
    "release_date" : "2018-06-19T00:00:00Z",
    "advisory" : "RHSA-2018:1854",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6",
    "package" : "kernel-0:2.6.32-754.el6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "release_date" : "2018-04-10T00:00:00Z",
    "advisory" : "RHSA-2018:0676",
    "cpe" : "cpe:/a:redhat:rhel_extras_rt:7",
    "package" : "kernel-rt-0:3.10.0-862.rt56.804.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "release_date" : "2018-04-10T00:00:00Z",
    "advisory" : "RHSA-2018:1062",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7",
    "package" : "kernel-0:3.10.0-862.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "release_date" : "2019-12-10T00:00:00Z",
    "advisory" : "RHSA-2019:4154",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7",
    "package" : "kernel-alt-0:4.14.0-115.16.1.el7a"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 5",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:5"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise MRG 2",
    "fix_state" : "Affected",
    "package_name" : "realtime-kernel",
    "cpe" : "cpe:/a:redhat:enterprise_mrg:2"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2017-18203\nhttps://nvd.nist.gov/vuln/detail/CVE-2017-18203" ],
  "name" : "CVE-2017-18203",
  "csaw" : false
}