{
  "threat_severity" : "Important",
  "public_date" : "2016-06-15T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: Uninitialized variable in request_key handling causes kernel crash in error handling path",
    "id" : "1341716",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=1341716"
  },
  "cvss" : {
    "cvss_base_score" : "6.9",
    "cvss_scoring_vector" : "AV:L/AC:M/Au:N/C:C/I:C/A:C",
    "status" : "verified"
  },
  "cvss3" : {
    "cvss3_base_score" : "7.8",
    "cvss3_scoring_vector" : "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
    "status" : "verified"
  },
  "cwe" : "CWE-253",
  "details" : [ "The key_reject_and_link function in security/keys/key.c in the Linux kernel through 4.6.3 does not ensure that a certain data structure is initialized, which allows local users to cause a denial of service (system crash) via vectors involving a crafted keyctl request2 command.", "A flaw was found in the Linux kernel's keyring handling code: the key_reject_and_link() function could be forced to free an arbitrary memory block. An attacker could use this flaw to trigger a use-after-free condition on the system, potentially allowing for privilege escalation." ],
  "statement" : "This issue affects the Linux kernels as shipped with Red Hat Enterprise Linux 6 and may be addressed in a future update.\nThis issue does not affect the Linux kernel packages as shipped with Red Hat\nEnterprise Linux 7 and Red Hat Enterprise MRG 2 as the due updates to fix\nthis issue have been shipped now.",
  "acknowledgement" : "This issue was discovered by David Howells (Red Hat).",
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 6",
    "release_date" : "2016-10-04T00:00:00Z",
    "advisory" : "RHSA-2016:2006",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6",
    "package" : "kernel-0:2.6.32-642.6.1.el6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6.4 Advanced Update Support",
    "release_date" : "2016-11-01T00:00:00Z",
    "advisory" : "RHSA-2016:2133",
    "cpe" : "cpe:/o:redhat:rhel_aus:6.4",
    "package" : "kernel-0:2.6.32-358.75.1.el6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6.5 Advanced Update Support",
    "release_date" : "2016-10-18T00:00:00Z",
    "advisory" : "RHSA-2016:2074",
    "cpe" : "cpe:/o:redhat:rhel_aus:6.5",
    "package" : "kernel-0:2.6.32-431.74.1.el6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6.6 Extended Update Support",
    "release_date" : "2016-10-31T00:00:00Z",
    "advisory" : "RHSA-2016:2128",
    "cpe" : "cpe:/o:redhat:rhel_eus:6.6",
    "package" : "kernel-0:2.6.32-504.54.1.el6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6.7 Extended Update Support",
    "release_date" : "2016-10-18T00:00:00Z",
    "advisory" : "RHSA-2016:2076",
    "cpe" : "cpe:/o:redhat:rhel_eus:6.7",
    "package" : "kernel-0:2.6.32-573.35.1.el6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "release_date" : "2016-08-02T00:00:00Z",
    "advisory" : "RHSA-2016:1541",
    "cpe" : "cpe:/a:redhat:rhel_extras_rt:7",
    "package" : "kernel-rt-0:3.10.0-327.28.2.rt56.234.el7_2"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "release_date" : "2016-08-02T00:00:00Z",
    "advisory" : "RHSA-2016:1539",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7",
    "package" : "kernel-0:3.10.0-327.28.2.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.1 Extended Update Support",
    "release_date" : "2016-08-23T00:00:00Z",
    "advisory" : "RHSA-2016:1657",
    "cpe" : "cpe:/o:redhat:rhel_eus:7.1",
    "package" : "kernel-0:3.10.0-229.40.1.ael7b"
  }, {
    "product_name" : "Red Hat Enterprise MRG 2",
    "release_date" : "2016-08-02T00:00:00Z",
    "advisory" : "RHSA-2016:1532",
    "cpe" : "cpe:/a:redhat:enterprise_mrg:2:server:el6",
    "package" : "kernel-rt-1:3.10.0-327.rt56.194.el6rt"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 5",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:5"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2016-4470\nhttps://nvd.nist.gov/vuln/detail/CVE-2016-4470" ],
  "name" : "CVE-2016-4470",
  "csaw" : false
}