{
  "threat_severity" : "Moderate",
  "public_date" : "2020-02-10T00:00:00Z",
  "bugzilla" : {
    "description" : "xen: bit iteration mishandling allows Arm guest OS users to cause a DoS",
    "id" : "1801083",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=1801083"
  },
  "cvss3" : {
    "cvss3_base_score" : "6.5",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
    "status" : "draft"
  },
  "cwe" : "CWE-119",
  "details" : [ "An issue was discovered in Xen through 4.12.x allowing 32-bit Arm guest OS users to cause a denial of service (out-of-bounds access) because certain bit iteration is mishandled. In a number of places bitmaps are being used by the hypervisor to track certain state. Iteration over all bits involves functions which may misbehave in certain corner cases: On 32-bit Arm accesses to bitmaps with bit a count which is a multiple of 32, an out of bounds access may occur. A malicious guest may cause a hypervisor crash or hang, resulting in a Denial of Service (DoS). All versions of Xen are vulnerable. 32-bit Arm systems are vulnerable. 64-bit Arm systems are not vulnerable." ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 5",
    "fix_state" : "Not affected",
    "package_name" : "kernel-xen",
    "cpe" : "cpe:/o:redhat:enterprise_linux:5"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2019-19581\nhttps://nvd.nist.gov/vuln/detail/CVE-2019-19581\nhttps://xenbits.xen.org/xsa/advisory-307.html" ],
  "name" : "CVE-2019-19581",
  "csaw" : false
}