{
  "threat_severity" : "Moderate",
  "public_date" : "2019-08-12T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: race condition caused by a malicious USB device in the USB character device driver layer",
    "id" : "1783561",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=1783561"
  },
  "cvss3" : {
    "cvss3_base_score" : "4.2",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
    "status" : "verified"
  },
  "cwe" : "CWE-362",
  "details" : [ "In the Linux kernel before 5.2.10, there is a race condition bug that can be caused by a malicious USB device in the USB character device driver layer, aka CID-303911cfc5b9. This affects drivers/usb/core/file.c.", "A flaw was found in the Linux kernel, where there is a race condition bug that can be caused by a malicious USB device in the USB character device driver layer. An attacker who can hotplug at least two devices of this class can cause a use-after-free situation." ],
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 7",
    "release_date" : "2020-09-29T00:00:00Z",
    "advisory" : "RHSA-2020:4062",
    "cpe" : "cpe:/a:redhat:rhel_extras_rt:7",
    "package" : "kernel-rt-0:3.10.0-1160.rt56.1131.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "release_date" : "2020-09-29T00:00:00Z",
    "advisory" : "RHSA-2020:4060",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7",
    "package" : "kernel-0:3.10.0-1160.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2020-11-04T00:00:00Z",
    "advisory" : "RHSA-2020:4609",
    "cpe" : "cpe:/a:redhat:enterprise_linux:8::nfv",
    "package" : "kernel-rt-0:4.18.0-240.rt7.54.el8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2020-11-04T00:00:00Z",
    "advisory" : "RHSA-2020:4431",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8",
    "package" : "kernel-0:4.18.0-240.el8"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 5",
    "fix_state" : "Out of support scope",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:5"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Will not fix",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Will not fix",
    "package_name" : "kernel-alt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise MRG 2",
    "fix_state" : "Will not fix",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/a:redhat:enterprise_mrg:2"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2019-19537\nhttps://nvd.nist.gov/vuln/detail/CVE-2019-19537" ],
  "name" : "CVE-2019-19537",
  "mitigation" : {
    "value" : "Many Character devices can trigger this flaw as they leverage the lower levels of the USB subsystem.\nThe safest method that I have found would be to disable USB ports that are able to be attacked\nusing this method, disable them first by disallowing them from waking up from low-power states \nwith the command (Replace X with the port number available).\necho disabled >> /sys/bus/usb/devices/usbX/power/wakeup \nThe system must also disable the specific ports power after with the command:\necho suspend | sudo tee /sys/bus/usb/devices/usbX/power/level\nThis change not persist through system reboots and must be applied at each reboot to be effective.",
    "lang" : "en:us"
  },
  "csaw" : false
}