An out-of-bounds memory write issue was found in the Linux Kernel, version 3.13 through 5.4, in the way the Linux kernel's KVM hypervisor handled the 'KVM_GET_EMULATED_CPUID' ioctl(2) request to get CPUID features emulated by the KVM hypervisor. A user or process able to access the '/dev/kvm' device could use this flaw to crash the system, resulting in a denial of service.
https://www.openwall.com/lists/oss-security/2019/12/16/1
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-19332
https://lists.debian.org/debian-lts-announce/2020/01/msg00013.html
https://usn.ubuntu.com/4254-1/
https://usn.ubuntu.com/4254-2/
https://security.netapp.com/advisory/ntap-20200204-0002/
https://usn.ubuntu.com/4258-1/
https://usn.ubuntu.com/4287-1/
https://usn.ubuntu.com/4287-2/
https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html
https://usn.ubuntu.com/4284-1/
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html
https://lore.kernel.org/kvm/000000000000ea5ec20598d90e50%40google.com/
Source: MITRE
Published: 2020-01-09
Updated: 2023-02-12
Type: CWE-787
Base Score: 5.6
Vector: AV:L/AC:L/Au:N/C:N/I:P/A:C
Impact Score: 7.8
Exploitability Score: 3.9
Severity: MEDIUM
Base Score: 6.1
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
Impact Score: 4.2
Exploitability Score: 1.8
Severity: MEDIUM