{
  "threat_severity" : "Low",
  "public_date" : "2018-03-22T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: NULL pointer dereference in ext4/mballoc.c:ext4_process_freed_data() when mounting crafted ext4 image",
    "id" : "1560777",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=1560777"
  },
  "cvss3" : {
    "cvss3_base_score" : "4.6",
    "cvss3_scoring_vector" : "CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
    "status" : "verified"
  },
  "cwe" : "CWE-476",
  "details" : [ "The ext4_iget function in fs/ext4/inode.c in the Linux kernel through 4.15.15 mishandles the case of a root directory with a zero i_links_count, which allows attackers to cause a denial of service (ext4_process_freed_data NULL pointer dereference and OOPS) via a crafted ext4 image.", "The Linux kernel is vulnerable to a NULL pointer dereference in the ext4/mballoc.c:ext4_process_freed_data() function. An attacker could trick a legitimate user or a privileged attacker could exploit this by mounting a crafted ext4 image to cause a kernel panic." ],
  "acknowledgement" : "Red Hat would like to thank Wen Xu for reporting this issue.",
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 7",
    "release_date" : "2018-10-30T00:00:00Z",
    "advisory" : "RHSA-2018:3096",
    "cpe" : "cpe:/a:redhat:rhel_extras_rt:7",
    "package" : "kernel-rt-0:3.10.0-957.rt56.910.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "release_date" : "2018-10-30T00:00:00Z",
    "advisory" : "RHSA-2018:2948",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7",
    "package" : "kernel-alt-0:4.14.0-115.el7a"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "release_date" : "2018-10-30T00:00:00Z",
    "advisory" : "RHSA-2018:3083",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7",
    "package" : "kernel-0:3.10.0-957.el7"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 5",
    "fix_state" : "Will not fix",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:5"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Fix deferred",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise MRG 2",
    "fix_state" : "Fix deferred",
    "package_name" : "realtime-kernel",
    "cpe" : "cpe:/a:redhat:enterprise_mrg:2"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2018-1092\nhttps://nvd.nist.gov/vuln/detail/CVE-2018-1092" ],
  "name" : "CVE-2018-1092",
  "csaw" : false
}