{
  "threat_severity" : "Low",
  "public_date" : "2021-11-17T00:00:00Z",
  "bugzilla" : {
    "description" : "libvirt: segmentation fault during VM shutdown can lead to vdsm hang",
    "id" : "2024326",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2024326"
  },
  "cvss3" : {
    "cvss3_base_score" : "5.3",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
    "status" : "verified"
  },
  "cwe" : "CWE-416",
  "details" : [ "A use-after-free flaw was found in libvirt. The qemuMonitorUnregister() function in qemuProcessHandleMonitorEOF is called using multiple threads without being adequately protected by a monitor lock. This flaw could be triggered by the virConnectGetAllDomainStats API when the guest is shutting down. An unprivileged client with a read-only connection could use this flaw to perform a denial of service attack by causing the libvirt daemon to crash.", "A use-after-free flaw was found in libvirt. The qemuMonitorUnregister() function in qemuProcessHandleMonitorEOF is called using multiple threads without being adequately protected by a monitor lock. This flaw could be triggered by the virConnectGetAllDomainStats API when the guest is shutting down. An unprivileged client with a read-only connection could use this flaw to perform a denial of service attack by causing the libvirt daemon to crash." ],
  "affected_release" : [ {
    "product_name" : "Advanced Virtualization for RHEL 8.5.0",
    "release_date" : "2021-11-16T00:00:00Z",
    "advisory" : "RHBA-2021:4684",
    "cpe" : "cpe:/a:redhat:advanced_virtualization:8.5::el8",
    "package" : "virt:av-8050020211025110038.c5368500"
  }, {
    "product_name" : "Advanced Virtualization for RHEL 8.5.0",
    "release_date" : "2021-11-16T00:00:00Z",
    "advisory" : "RHBA-2021:4684",
    "cpe" : "cpe:/a:redhat:advanced_virtualization:8.5::el8",
    "package" : "virt-devel:av-8050020211025110038.c5368500"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2022-05-10T00:00:00Z",
    "advisory" : "RHSA-2022:1759",
    "cpe" : "cpe:/a:redhat:enterprise_linux:8",
    "package" : "virt-devel:rhel-8060020220408104655.d63f516d"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2022-05-10T00:00:00Z",
    "advisory" : "RHSA-2022:1759",
    "cpe" : "cpe:/a:redhat:enterprise_linux:8",
    "package" : "virt:rhel-8060020220408104655.d63f516d"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Out of support scope",
    "package_name" : "libvirt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Out of support scope",
    "package_name" : "libvirt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8 Advanced Virtualization",
    "fix_state" : "Fix deferred",
    "package_name" : "virt:8.2/libvirt",
    "cpe" : "cpe:/a:redhat:advanced_virtualization:8::el8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8 Advanced Virtualization",
    "fix_state" : "Affected",
    "package_name" : "virt:av/libvirt",
    "cpe" : "cpe:/a:redhat:advanced_virtualization:8::el8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Not affected",
    "package_name" : "libvirt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2021-3975\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-3975" ],
  "name" : "CVE-2021-3975",
  "csaw" : false
}