A NULL pointer dereference flaw was found in the floppy disk emulator of QEMU. This issue occurs while processing read/write ioport commands if the selected floppy drive is not initialized with a block device. This flaw allows a privileged guest user to crash the QEMU process on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.
https://bugs.launchpad.net/qemu/+bug/1912780
https://www.openwall.com/lists/oss-security/2021/01/28/1
https://security.netapp.com/advisory/ntap-20210708-0004/
https://lists.debian.org/debian-lts-announce/2022/04/msg00002.html
https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html
Source: MITRE
Published: 2021-05-26
Updated: 2023-02-12
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