{
  "threat_severity" : "Moderate",
  "public_date" : "2010-11-21T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: tight loop and no preemption can cause system stall",
    "id" : "769711",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=769711"
  },
  "cvss" : {
    "cvss_base_score" : "4.7",
    "cvss_scoring_vector" : "AV:L/AC:M/Au:N/C:N/I:N/A:C",
    "status" : "verified"
  },
  "details" : [ "The Linux kernel before 2.6.37 does not properly implement a certain clock-update optimization, which allows local users to cause a denial of service (system hang) via an application that executes code in a loop." ],
  "statement" : "This issue does not affect Red Hat Enterprise Linux 5 and Red Hat Enterprise MRG 2.",
  "acknowledgement" : "Red Hat would like to thank Masaki Tachibana for reporting this issue.",
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 6",
    "release_date" : "2011-12-22T00:00:00Z",
    "advisory" : "RHSA-2011:1849",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6",
    "package" : "kernel-0:2.6.32-220.2.1.el6"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 4",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:4"
  }, {
    "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 MRG 2",
    "fix_state" : "Not affected",
    "package_name" : "realtime-kernel",
    "cpe" : "cpe:/a:redhat:enterprise_mrg:2"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2011-4621\nhttps://nvd.nist.gov/vuln/detail/CVE-2011-4621" ],
  "name" : "CVE-2011-4621",
  "csaw" : false
}