{
  "threat_severity" : "Moderate",
  "public_date" : "2017-03-24T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: ping socket / AF_LLC connect() sin_family race",
    "id" : "1436649",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=1436649"
  },
  "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-362",
  "details" : [ "The ping_unhash function in net/ipv4/ping.c in the Linux kernel through 4.10.8 is too late in obtaining a certain lock and consequently cannot ensure that disconnect function calls are safe, which allows local users to cause a denial of service (panic) by leveraging access to the protocol value of IPPROTO_ICMP in a socket system call.", "A race condition leading to a NULL pointer dereference was found in the Linux kernel's Link Layer Control implementation. A local attacker with access to ping sockets could use this flaw to crash the system." ],
  "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 the products listed.\nThis issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 6, 7 and MRG-2.  Future Linux kernel updates for the respective releases may address this issue.",
  "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" : "2017-08-01T00:00:00Z",
    "advisory" : "RHSA-2017:2077",
    "cpe" : "cpe:/a:redhat:rhel_extras_rt:7",
    "package" : "kernel-rt-0:3.10.0-693.rt56.617.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "release_date" : "2017-08-01T00:00:00Z",
    "advisory" : "RHSA-2017:1842",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7",
    "package" : "kernel-0:3.10.0-693.el7"
  }, {
    "product_name" : "Red Hat Enterprise MRG 2",
    "release_date" : "2017-09-06T00:00:00Z",
    "advisory" : "RHSA-2017:2669",
    "cpe" : "cpe:/a:redhat:enterprise_mrg:2:server:el6",
    "package" : "kernel-rt-1:3.10.0-693.2.1.rt56.585.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-2017-2671\nhttps://nvd.nist.gov/vuln/detail/CVE-2017-2671" ],
  "name" : "CVE-2017-2671",
  "csaw" : false
}