Security Advisory

CVE-2021-20196

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2021-05-26 21:16:58

Last updated 2024-08-03 17:30:07

Assigner redhat

State PUBLISHED

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.

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