{
  "threat_severity" : "Important",
  "public_date" : "2015-11-10T00:00:00Z",
  "bugzilla" : {
    "description" : "virt: guest to host DoS by triggering an infinite loop in microcode via #DB exception",
    "id" : "1278496",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=1278496"
  },
  "cvss" : {
    "cvss_base_score" : "5.2",
    "cvss_scoring_vector" : "AV:A/AC:M/Au:S/C:N/I:N/A:C",
    "status" : "verified"
  },
  "cwe" : "CWE-835",
  "details" : [ "The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to cause a denial of service (host OS panic or hang) by triggering many #DB (aka Debug) exceptions, related to svm.c.", "It was found that the x86 ISA (Instruction Set Architecture) is prone to a denial of service attack inside a virtualized environment in the form of an infinite loop in the microcode due to the way (sequential) delivering of benign exceptions such as #DB (debug exception) is handled. A privileged user inside a guest could use this flaw to create denial of service conditions on the host kernel." ],
  "statement" : "This issue affects the version of the kvm & xen packages as shipped with Red Hat Enterprise Linux 5.\nThis issue does not affect the versions of the kernel package as shipped with\nRed Hat Enterprise Linux 5 and Red Hat Enterprise MRG 2.\nThis issue affects the version of Linux kernel as shipped with\nRed Hat Enterprise Linux 6 and 7. Future kernel updates for the respective releases may address this issue.\nRed Hat Enterprise Linux 5 is now in Production Phase 3 of the support and\nmaintenance life cycle. Thus it is not currently planned to be addressed in future updates. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.",
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 6",
    "release_date" : "2015-12-15T00:00:00Z",
    "advisory" : "RHSA-2015:2636",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6",
    "package" : "kernel-0:2.6.32-573.12.1.el6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6.2 Advanced Update Support",
    "release_date" : "2016-01-19T00:00:00Z",
    "advisory" : "RHSA-2016:0046",
    "cpe" : "cpe:/o:redhat:rhel_mission_critical:6.2",
    "package" : "kernel-0:2.6.32-220.65.1.el6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6.4 Advanced Update Support",
    "release_date" : "2016-01-07T00:00:00Z",
    "advisory" : "RHSA-2016:0004",
    "cpe" : "cpe:/o:redhat:rhel_aus:6.4",
    "package" : "kernel-0:2.6.32-358.69.1.el6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6.5 Advanced Update Support",
    "release_date" : "2015-12-15T00:00:00Z",
    "advisory" : "RHSA-2015:2645",
    "cpe" : "cpe:/o:redhat:rhel_aus:6.5",
    "package" : "kernel-0:2.6.32-431.68.1.el6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6.6 Extended Update Support",
    "release_date" : "2016-01-12T00:00:00Z",
    "advisory" : "RHSA-2016:0024",
    "cpe" : "cpe:/o:redhat:rhel_eus:6.6",
    "package" : "kernel-0:2.6.32-504.40.1.el6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "release_date" : "2015-12-08T00:00:00Z",
    "advisory" : "RHSA-2015:2552",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7",
    "package" : "kernel-0:3.10.0-327.3.1.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.1 Extended Update Support",
    "release_date" : "2016-02-02T00:00:00Z",
    "advisory" : "RHSA-2016:0103",
    "cpe" : "cpe:/o:redhat:rhel_eus:7.1",
    "package" : "kernel-0:3.10.0-229.26.2.ael7b"
  } ],
  "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 5",
    "fix_state" : "Will not fix",
    "package_name" : "kvm",
    "cpe" : "cpe:/o:redhat:enterprise_linux:5"
  }, {
    "product_name" : "Red Hat Enterprise Linux 5",
    "fix_state" : "Will not fix",
    "package_name" : "xen",
    "cpe" : "cpe:/o:redhat:enterprise_linux:5"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Not affected",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "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-2015-8104\nhttps://nvd.nist.gov/vuln/detail/CVE-2015-8104" ],
  "name" : "CVE-2015-8104",
  "csaw" : false
}