NULL Pointer Dereference Affecting qemu-hw-display-virtio-vga package, versions <5.2.0-150300.109.2


Severity

Recommended
0.0
low
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.06% (26th percentile)

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  • Snyk IDSNYK-SLES153-QEMUHWDISPLAYVIRTIOVGA-2646266
  • published14 Apr 2022
  • disclosed25 Jan 2022

Introduced: 25 Jan 2022

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

How to fix?

Upgrade SLES:15.3 qemu-hw-display-virtio-vga to version 5.2.0-150300.109.2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qemu-hw-display-virtio-vga package and not the qemu-hw-display-virtio-vga package as distributed by SLES. See How to fix? for SLES:15.3 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