{
  "threat_severity" : "Moderate",
  "public_date" : "2020-01-30T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: use-after-free in n_tty_receive_buf_common function in drivers/tty/n_tty.c",
    "id" : "1802559",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=1802559"
  },
  "cvss3" : {
    "cvss3_base_score" : "7.1",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
    "status" : "verified"
  },
  "cwe" : "CWE-416",
  "details" : [ "There is a use-after-free vulnerability in the Linux kernel through 5.5.2 in the n_tty_receive_buf_common function in drivers/tty/n_tty.c.", "A use-after-free flaw was found in the Linux kernel console driver when using the copy-paste buffer. This flaw allows a local user  to crash the system." ],
  "statement" : "The impact is moderate, because of the need of additional privileges (usually local console user).",
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 7",
    "release_date" : "2021-06-08T00:00:00Z",
    "advisory" : "RHSA-2021:2316",
    "cpe" : "cpe:/a:redhat:rhel_extras_rt:7",
    "package" : "kernel-rt-0:3.10.0-1160.31.1.rt56.1169.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "release_date" : "2021-06-08T00:00:00Z",
    "advisory" : "RHSA-2021:2314",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7",
    "package" : "kernel-0:3.10.0-1160.31.1.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.6 Advanced Update Support(Disable again in 2026 - SPRHEL-7118)",
    "release_date" : "2021-08-31T00:00:00Z",
    "advisory" : "RHSA-2021:3320",
    "cpe" : "cpe:/o:redhat:rhel_aus:7.6",
    "package" : "kernel-0:3.10.0-957.80.1.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.6 Telco Extended Update Support",
    "release_date" : "2021-08-31T00:00:00Z",
    "advisory" : "RHSA-2021:3320",
    "cpe" : "cpe:/o:redhat:rhel_tus:7.6",
    "package" : "kernel-0:3.10.0-957.80.1.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.6 Update Services for SAP Solutions",
    "release_date" : "2021-08-31T00:00:00Z",
    "advisory" : "RHSA-2021:3320",
    "cpe" : "cpe:/o:redhat:rhel_e4s:7.6",
    "package" : "kernel-0:3.10.0-957.80.1.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.7 Advanced Update Support",
    "release_date" : "2021-09-14T00:00:00Z",
    "advisory" : "RHSA-2021:3522",
    "cpe" : "cpe:/o:redhat:rhel_aus:7.7",
    "package" : "kernel-0:3.10.0-1062.56.1.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.7 Telco Extended Update Support",
    "release_date" : "2021-09-14T00:00:00Z",
    "advisory" : "RHSA-2021:3522",
    "cpe" : "cpe:/o:redhat:rhel_tus:7.7",
    "package" : "kernel-0:3.10.0-1062.56.1.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.7 Update Services for SAP Solutions",
    "release_date" : "2021-09-14T00:00:00Z",
    "advisory" : "RHSA-2021:3522",
    "cpe" : "cpe:/o:redhat:rhel_e4s:7.7",
    "package" : "kernel-0:3.10.0-1062.56.1.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" : "Out of support scope",
    "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" : "Out of support scope",
    "package_name" : "kernel",
    "cpe" : "cpe:/a:redhat:enterprise_mrg:2"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2020-8648\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-8648" ],
  "name" : "CVE-2020-8648",
  "mitigation" : {
    "value" : "Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.",
    "lang" : "en:us"
  },
  "csaw" : false
}