QEMU (aka Quick Emulator), when built with the IDE disk and CD/DVD-ROM Emulator support, allows local guest OS privileged users to cause a denial of service (NULL pointer dereference and QEMU process crash) by flushing an empty CDROM device drive.
http://www.debian.org/security/2017/dsa-3991
http://www.openwall.com/lists/oss-security/2017/08/21/2
http://www.securityfocus.com/bid/100451
https://lists.gnu.org/archive/html/qemu-devel/2017-08/msg01850.html
Source: MITRE
Published: 2017-08-23
Updated: 2020-11-10
Type: CWE-476
Base Score: 2.1
Vector: AV:L/AC:L/Au:N/C:N/I:N/A:P
Impact Score: 2.9
Exploitability Score: 3.9
Severity: LOW
Base Score: 6.5
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Impact Score: 4
Exploitability Score: 2
Severity: MEDIUM