NULL Pointer Dereference Affecting qemu-kvm-common package, versions <15:6.2.0-11.module+el8.6.0+14707+5aa4b42d


Severity

Recommended
medium

Based on CentOS security rating.

Threat Intelligence

EPSS
0.06% (26th percentile)

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  • Snyk IDSNYK-CENTOS8-QEMUKVMCOMMON-1957612
  • 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?

Upgrade Centos:8 qemu-kvm-common to version 15:6.2.0-11.module+el8.6.0+14707+5aa4b42d or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qemu-kvm-common package and not the qemu-kvm-common package as distributed by Centos. See How to fix? for Centos: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 Scores

version 3.1