Detections
Analytics
CVE-2021-20196
medium
Description
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.
References
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/2022/09/msg00008.html
https://lists.debian.org/debian-lts-announce/2022/04/msg00002.html