{
  "threat_severity" : "Important",
  "public_date" : "2018-11-27T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: nfs: use-after-free in svc_process_common()",
    "id" : "1660375",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=1660375"
  },
  "cvss3" : {
    "cvss3_base_score" : "6.5",
    "cvss3_scoring_vector" : "CVSS:3.0/AV:A/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:H",
    "status" : "verified"
  },
  "cwe" : "CWE-416",
  "details" : [ "A flaw was found in the Linux kernel's NFS41+ subsystem. NFS41+ shares mounted in different network namespaces at the same time can make bc_svc_process() use wrong back-channel IDs and cause a use-after-free vulnerability. Thus a malicious container user can cause a host kernel memory corruption and a system panic. Due to the nature of the flaw, privilege escalation cannot be fully ruled out.", "A flaw was found in the Linux kernel's NFS41+ subsystem. NFS41+ shares mounted in different network namespaces at the same time can make bc_svc_process() use wrong back-channel IDs and cause a use-after-free vulnerability. Thus a malicious container user can cause a host kernel memory corruption and a system panic. Due to the nature of the flaw, privilege escalation cannot be fully ruled out." ],
  "acknowledgement" : "Red Hat would like to thank Evgenii Shatokhin (Virtuozzo) and Vasily Averin (Virtuozzo) for reporting this issue.",
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 7",
    "release_date" : "2019-07-29T00:00:00Z",
    "advisory" : "RHSA-2019:1891",
    "cpe" : "cpe:/a:redhat:rhel_extras_rt:7",
    "package" : "kernel-rt-0:3.10.0-957.27.2.rt56.940.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "release_date" : "2019-07-29T00:00:00Z",
    "advisory" : "RHSA-2019:1873",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7",
    "package" : "kernel-0:3.10.0-957.27.2.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "release_date" : "2020-07-07T00:00:00Z",
    "advisory" : "RHSA-2020:2854",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7",
    "package" : "kernel-alt-0:4.14.0-115.26.1.el7a"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.4 Extended Update Support",
    "release_date" : "2019-09-12T00:00:00Z",
    "advisory" : "RHSA-2019:2696",
    "cpe" : "cpe:/o:redhat:rhel_eus:7.4",
    "package" : "kernel-0:3.10.0-693.58.1.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2019-11-05T00:00:00Z",
    "advisory" : "RHSA-2019:3309",
    "cpe" : "cpe:/a:redhat:enterprise_linux:8::nfv",
    "package" : "kernel-rt-0:4.18.0-147.rt24.93.el8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2019-11-05T00:00:00Z",
    "advisory" : "RHSA-2019:3517",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8",
    "package" : "kernel-0:4.18.0-147.el8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions",
    "release_date" : "2020-01-22T00:00:00Z",
    "advisory" : "RHSA-2020:0204",
    "cpe" : "cpe:/o:redhat:rhel_e4s:8.0",
    "package" : "kernel-0:4.18.0-80.15.1.el8_0"
  }, {
    "product_name" : "Red Hat Enterprise MRG 2",
    "release_date" : "2019-09-11T00:00:00Z",
    "advisory" : "RHSA-2019:2730",
    "cpe" : "cpe:/a:redhat:enterprise_mrg:2:server:el6",
    "package" : "kernel-rt-1:3.10.0-693.58.1.rt56.652.el6rt"
  } ],
  "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 6",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2018-16884\nhttps://nvd.nist.gov/vuln/detail/CVE-2018-16884" ],
  "name" : "CVE-2018-16884",
  "csaw" : false
}