{
  "threat_severity" : "Important",
  "public_date" : "2014-07-04T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: x86_64: ptrace: sysret to non-canonical address",
    "id" : "1115927",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=1115927"
  },
  "cvss" : {
    "cvss_base_score" : "6.9",
    "cvss_scoring_vector" : "AV:L/AC:M/Au:N/C:C/I:C/A:C",
    "status" : "verified"
  },
  "cwe" : "CWE-642",
  "details" : [ "The Linux kernel before 3.15.4 on Intel processors does not properly restrict use of a non-canonical value for the saved RIP address in the case of a system call that does not use IRET, which allows local users to leverage a race condition and gain privileges, or cause a denial of service (double fault), via a crafted application that makes ptrace and fork system calls.", "It was found that the Linux kernel's ptrace subsystem allowed a traced process' instruction pointer to be set to a non-canonical memory address without forcing the non-sysret code path when returning to user space. A local, unprivileged user could use this flaw to crash the system or, potentially, escalate their privileges on the system.\nNote: The CVE-2014-4699 issue only affected systems using an Intel CPU." ],
  "statement" : "This issue does not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 5.",
  "acknowledgement" : "Red Hat would like to thank Andy Lutomirski for reporting this issue.",
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 6",
    "release_date" : "2014-07-23T00:00:00Z",
    "advisory" : "RHSA-2014:0924",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6",
    "package" : "kernel-0:2.6.32-431.20.5.el6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6.2 Advanced Update Support",
    "release_date" : "2014-07-28T00:00:00Z",
    "advisory" : "RHSA-2014:0949",
    "cpe" : "cpe:/o:redhat:rhel_mission_critical:6.2",
    "package" : "kernel-0:2.6.32-220.53.1.el6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6.4 Extended Update Support",
    "release_date" : "2014-07-23T00:00:00Z",
    "advisory" : "RHSA-2014:0925",
    "cpe" : "cpe:/o:redhat:rhel_eus:6.4",
    "package" : "kernel-0:2.6.32-358.46.2.el6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "release_date" : "2014-07-23T00:00:00Z",
    "advisory" : "RHSA-2014:0923",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7",
    "package" : "kernel-0:3.10.0-123.4.4.el7"
  }, {
    "product_name" : "Red Hat Enterprise MRG 2",
    "release_date" : "2014-07-22T00:00:00Z",
    "advisory" : "RHSA-2014:0913",
    "cpe" : "cpe:/a:redhat:enterprise_mrg:2:server:el6",
    "package" : "kernel-rt-0:3.10.33-rt32.43.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-2014-4699\nhttps://nvd.nist.gov/vuln/detail/CVE-2014-4699" ],
  "name" : "CVE-2014-4699",
  "csaw" : false
}