CVE-2021-20196

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.

Date published : 2021-05-26

https://security.netapp.com/advisory/ntap-20210708-0004/

https://bugs.launchpad.net/qemu/+bug/1912780