NULL Pointer Dereference Affecting virt:8.2/qemu-kvm-hw-usbredir package, versions *


Severity

Recommended
0.0
low
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.48% (39th percentile)

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  • Snyk IDSNYK-RHEL8-VIRT-4412146
  • published26 Jul 2021
  • disclosed23 Jan 2021

Introduced: 23 Jan 2021

CVE-2021-20196  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:8 virt:8.2/qemu-kvm-hw-usbredir.

NVD Description

Note: Versions mentioned in the description apply only to the upstream virt:8.2/qemu-kvm-hw-usbredir package and not the virt:8.2/qemu-kvm-hw-usbredir package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1